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. 2024 Dec 23;24:413. doi: 10.1186/s12893-024-02713-8

A meta-analysis comparing open and minimally invasive cervical tumor surgery wound infection and postoperative complications

Ran Song 1, Mingming Ma 1, Nana Yang 1, Chunfang Chen 1, Huan Wang 1, Juan Li 1,
PMCID: PMC11665136  PMID: 39710635

Abstract

To evaluate the impact of open surgical care (OSC) compared to minimally invasive surgery (MIS) on the occurrence of wound infection (WI) and overall postoperative aggregate complications (POACs) in female cervical cancer (CC) patients, we conducted this meta-analysis study. A thorough examination of the literature up to March 2024 was conducted, and 1849 related studies were examined. The 44 studies that were selected included 11,631 females who had CC. The odds ratio (ORs) and the estimation using 95% confidence intervals (CIs) were used to calculate the impact of open surgical management and MIS on WI and POACs in females with CC, using dichotomous methodologies and a random or fixed model. When comparing MIS to open surgical care, there was a substantial decrease in WI (OR, 0.19; 95% CI, 0.13–0.29, p < 0.001) and POACs (OR, 0.49; 95% CI, 0.38–0.62, p < 0.001) in females with CC. On the other hand, among female patients with CC, MIS did not differ significantly from open surgical care in pelvic infection and abscess (PI&A) incidence (OR, 0.59; 95% CI, 0.31–1.16, p = 0.13). When compared to OSC, women with CC who underwent MIS experienced considerably fewer WI and POACs; however, there was no discernible difference in PI&A rates. However, given several of the designated examinations for the meta-analysis had relatively small sample sizes, caution must be used while handling its values.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12893-024-02713-8.

Keywords: Wound infection, Laparotomy, Minimally invasive surgery, Postoperative issues, Cervical cancer

Introduction

Cervical cancer (CC), including its extension, ranks as the fourth most prevalent form of cancer in females [1]. The chief choice for treating such situations was a radical hysterectomy (RH) through open surgical care (OSC) [2]. Robotic surgery, also known as laparoscopy, has gained global recognition as the most effective treatment for CC, even in its early stages, thanks to the development of the laparoscopic approach paired with minimally invasive surgery (MIS) [3]. The clinical study’s findings on laparoscopic methodology for the cervix were surprising in that they indicated poorer overall and disease-free rates of survival for MIS in 2018 compared to OSC [4]. The four National Comprehensive Cancer Network recommendations and subsequent literature referred to OSC as a typical and suggested strategy for RH for CC [5]. To fully understand the correct intent of OSC and MIS for CC, it is crucial to talk about surgical outcomes. A briefer hospital stay, a lesser amount of blood loss, and a quicker recovery time are just a few advantages that MIS has over OSC for the treatment of gynecological problems [58]. Like the mainstream of previous examinations, MIS offers the advantage of a 3D viewpoint and a more specific surgical setting over open surgical management [912]. MIS was also associated with operative difficulty, a lengthy learning curve, and a higher cost compared to OSC. There isn’t much proof to back up the superiority of any one surgical technique, and it is uncertain whether MIS is harmless and effective due to the poor quality of previous studies, the small sample sizes, and the dearth of randomized controlled trials (RCTs). There was no difference in postoperative problems between OSC and MIS, according to several previous studies on complications [13]. As instruments and methods have improved, many studies have discovered that MIS has lower POAC rates than OSC [14]. Incorrectly, it is still unknown whether female complication rates from OSC are lower than those from MIS. A chief component in the assessment of CC is one that emphasizes the gravity of the issues. In order to provide trustworthy information to compare the advantages of different surgical techniques for treating CC, our meta-analysis set out to assess the effects of open surgical interventions and MIS on wound infection (WI), POACs, pelvic infection, and abscess.

Methods

Eligibility criteria

The studies showing how MIS and OSC affect WI and POACs in female CC patients chosen so that an overview could be made [15]. The protocol was registered in PROSPERO (ID number: CRD2111617323).

Information sources

Figure 1 is an overall study representation. When the next criteria of inclusion were satisfied, literature was incorporated into the study: [16, 17]

Fig. 1.

Fig. 1

Shows the study procedure flowchart

  1. The study was a RCT, observational, retrospective, prospective one.

  2. Selected female subjects for the investigation were those who had CC.

  3. Open surgical management was added into the operation.

  4. The study made a distinction between the impact of open surgical management and MIS on WI and POACs in CC treatment.

  5. Laparoscopy studies, with or without the use of robotics, were included in the analysis.

Explorations on WIs and POACs in females without MIS and open surgical management, as well as explorations that did not examine features of consequence of MIS and open surgical management on WI and POACs in females with CC, were excluded from consideration [18, 19].

Search strategy

We defined the search protocol operations in accordance with the PICOS opinion. WIs, POACs, pelvic infection, and abscess (PI&A) were the “outcomes”; finally, the “study design” was unrestricted. The “population” (P) consisted of female patients with CC; the “intervention” or “exposure” was open surgical management, and the “comparison” was between MIS and open surgical management [19]. In 2002, the first robotic-hysterectomy was carried out by Diaz-Arrasti [20], followed by several published trials. Hence, we searched for studies published between 2002 and until March 2024 using the following databases: the Cochrane Library, Embase, Google Scholar, PubMed, and OVID. We accomplished this by organizing keywords and connected expressions, as shown in Table 1. We eliminated paper repetitions, compiled them into an EndNote file, and reassessed their titles and abstracts to omit studies that could not demonstrate a connection between the outcomes of open surgical management and MIS, WI, and POACs in female CC patients [1921].

Table 1.

Search Strategy for Each Database

Database Search strategy
Google Scholar

#1 “cervical cancer” OR “minimally invasive surgery”

#2 “laparotomy” OR “wound infection” OR " “postoperative complication” OR “pelvic infection and abscess”

#3 #1 AND #2

Embase

#1 ‘cervical cancer’ /exp OR ‘minimally invasive surgery’ /exp OR ‘postoperative complication’

#2 ‘laparotomy’/exp OR ‘wound infection’/exp OR ‘pelvic infection and abscess’

#3 #1 AND #2

Cochrane library

#1 (cervical cancer): ti, ab, kw (minimally invasive surgery): ti, ab, kw (postoperative complication): ti, ab, kw (Word variations have been searched)

#2 (laparotomy): ti, ab, kw OR (wound infection): ti, ab, kw OR(pelvic infection and abscess): ti, ab, kw (Word variations have been searched)

#3 #1 AND #2

Pubmed

#1 “cervical cancer“[MeSH] OR “minimally invasive surgery“[MeSH] OR “postoperative complication” [All Fields]

#2 “laparotomy“[MeSH Terms] OR “wound infection“[MeSH] OR “pelvic infection and abscess “[All Fields]

#3 #1 AND #2

OVID

#1 “cervical cancer“[All Fields] OR “minimally invasive surgery” [All Fields] OR “postoperative complication” [All Fields]

#2 “laparotomy“[ All fields] OR “wound infection“[All Fields] or “pelvic infection and abscess“[All Fields]

#3 #1 AND #2

Selection process

A process was established after the epidemiological statement, and it was subsequently organized and scrutinized using a meta-analysis technique.

Data collection process

The criteria used to collect data included the name of the first author, study date, study year, nation or location, population type, medical and therapeutic characteristics, categories, quantitative and qualitative estimation methods, data source, outcome estimation, and statistical analysis [22].

Data items

When a study’s values were variable, we independently collected data depended on a valuation of how OSC and MIS affected WI and POACs in female CC patients [16, 17, 23].

Study risk of bias assessment

To determine was there a possibility that any of the studies was biased, two authors individualistically reviewed the methodology of chosen examinations. “Risk of bias; RoB” instrument from the Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 was utilized to estimate the bureaucratic quality. Following classification according to the judgement criteria, each research work was allocated to a specific bias risk category: low: If all quality criteria were adequately met, the research was categorized as having a low RoB. However, if any requirements were not met or not addressed, the study was classed as having a medium bias risk. The analysis identified a significant risk of bias if any of the quality requirements were not fully or partially completed.

Effect measures

Only studies that evaluated and recorded the impact of open surgical management and MIS on WI and POACs in female CC patients were exposed to sensitivity analysis. Analysis of subclass was performed to assess sensitivity of females with CC and to compare OSC to MIS.

Statistical analysis

The odds ratio (OR) with a 95% confidence interval (CI) were estimated utilizing dichotomous random- or fixed-effect models [24]. Calculated I [2] index has range of 0 to 100 and is expressed as a percentage [25]. Higher I [2] values signify increased heterogeneity, whilst lower I [2] values signify decreased heterogeneity. If I [2] was 50% or above, random effect was selected; otherwise, fixed effect was chosen [26]. First study’s consequences were classified as component of analysis of subcategory. Bias was measured by Begg’s and Egger’s tests for quantitative assessment, and it was considered to be existing if the estimated P-value was above 0.05 [27, 28]. P-values were calculated by the two-tailed method. With Jamovi 2.3, graphs and statistical analyses were created [29].

Results

The study selected 44 papers published between 2002 and 2024 from all the related research that satisfied the inclusion criteria. Other studies were excluded for various reasons including studies that involved advanced stages of cervical cancer, patients who received chemotherapy prior to surgery, lacked unique data presentation, and articles that did not describe the outcome of interest. Table 2 displays the findings of these studies (30–72). Among the 11,631 female patients with CC who were at the beginning of the selected studies, 5072 were undergoing MIS, and 6559 were undergoing OSC. There were between 26 and 3333 females in the sample.

Table 2.

Characteristics of the selected investigations for the meta-analysis

Study Country Study design Total Minimally invasive surgery Open-surgical management Outcomes measured
No. BMI (SD) Age (years) No. BMI (SD) Age (years)
Lee, 2002 [30] Taiwan Prospective 60 30 54.4 (12.6) 46.2/ 30 56.3 (10.4) 48 POACs
Steed, 2004 [31] Canada Retrospective 276 71 NA 43/ 205 NA 44 POACs
Sharma, 2006 [32] UK Retrospective 67 35 NA 43.4 32 NA 42.8 POACs
Frumovitz, 2007 [33] USA Retrospective 89 35 28.1 40.8 54 28.2 42.5

POACs,

PI & A

Li, 2007 [34] China Retrospective 125 90 NA 42 35 NA 44 POACs
Uccella, 2007 [35] Italy Retrospective 98 50 23 47 48 25 53 POACs
Morgan, 2007 [36] Ireland Retrospective 60 30 25 35 30 24 38 WI, POACs
Zakashansky, 2007 [37] USA Prospective 60 30 NA 48.3 30 NA 46.6 WI, POACs
Boggess, 2008 [38] USA Retrospective 100 51/ robotic laparoscopy 28.6 (7.2) 47.4 49 26.1 41.9 WI, POACs,, PI & A
Ko, 2008 [39] USA Retrospective 48 16/ robotic laparoscopy 27.6(6.4) 42.3 32 26.6 (5.9) 41.7 WI, POACs,, PI & A
Papacharalabous, 2009 [40] UK Retrospective 26 14 NA 38.6 12 NA 43.5 WI, POACs
Estape, 2009 [41] USA Retrospective 63 49/ robotic laparoscopy 29.7 (3.2) 55 14 28.1 (4.8) 52.8 POACs,, PI & A
Maggioni, 2009 [42] USA Retrospective 80 40/ robotic laparoscopy 24.1 (5.5) 44.1 40 23.6 (5.0) 49.8 WI, POACs
Malzoni, 2009 [43] Italy Retrospective 147 65 26 40.5 82 29 42.7 POACs
Sobiczewski, 2009 [44] Poland Retrospective 80 22 NA 45.4 58 NA 51.1 WI, POACs
Pahisa, 2010 [45] Spain Retrospective 90 67 25.4 (1.1) 51 23 27.2 2.5) 48 WI, POACs
Lee, 2011 [46] Korea Retrospective 72 24 23.4 (3.55) 48.4 48 23.9 (4.7) 50.2 POACs
Sert, 2011 [47] Norway Retrospective 68 42/ robotic laparoscopy 25.4 (4.36) 44.1 26 22.5 (1.84) 45 POACs
Taylor, 2011 [48] USA Retrospective 27 9 26.3 41.4 18 26.9 41.1 WI, POACs
Gortchev, 2012 [49] Bulgaria Retrospective 294 119 NA 46 175 NA 42.5 POACs
Park, 2012 [50] Korea Retrospective 166 54 31.8 (1.4) 49.4 112 31.7 (1.5) 52.1 WI, POACs
Nam, 2012 [51] Korea Retrospective 526 263 NA NA 263 NA NA WI,, PI & A
Park, 2013 [52] Korea Retrospective 303 115 23.1 48.5 188 23.7 48.1 POACs,, PI & A
Lim, 2013 [53] Singapore Prospective 48 18 22.9 48 30 22.4 47 WI, POACs
Campos, 2013 [54] Brazil Randomized-controlled trial 30 16 NA 36.2 14 NA 39.6 POACs
Bogani, 2014 [55] Italy Retrospective 130 65 25.1 (5.2) 48.9 65 25.9 (6.1) 50.9 WI, POACs
Chen, 2014 [56] Taiwan Retrospective 100 56/ robotic laparoscopy 24.4 (4.9) 53.7 44 23.2 (3.4) 51.2 WI, POACs
Yin, 2014 [57] China Retrospective 45 22 NA 44 23 NA 46 WI, POACs
Asciutto, 2015 [58] Sweden Retrospective 250 65/ robotic laparoscopy 27.0 (6.0) 45.4 185 25.7 (4.7) 45.7 POACs
Xiao, 2015 [59] China Retrospective 154 106 23.8 (3.9) 43.7 48 24.7 (3.8) 45.7 WI, POACs
Ditto, 2015 [60] Italy Retrospective 120 60 24.4 (2.9) 46 60 24.0 (4.3) 45.5 POACs
Park, 2016 [61] Korea Retrospective 293 186 23.7 45.3 107 23.6 47.3 POACs
Shah, 2017 [62] USA Retrospective 311 109/ robotic laparoscopy 27.9 45.2 202 29.1 45.4 WI, POACs,, PI & A
Corrado, 2018 [63] Italy Retrospective 341 240/ robotic laparoscopy 23.3 46 101 23.5 45 WI, POACs
Guo, 2018 [64] China Retrospective 551 412 22.8 46 139 23.2 45 WI
Bogani, 2019 [65] Italy Retrospective 70 35 22.9 (4.0) 41.1 35 20.1 (9.3) 44.1 POACs
Matanes, 2019 [66] Canada Retrospective 98 74/ robotic laparoscopy 26.4 48 24 26.2 47 WI, POACs
Piedimonte, 2019 [67] Canada Retrospective 3333 749/ robotic laparoscopy NA NA 2584 NA NA WI, POACs
Yuan, 2019 [68] China Retrospective, single center 198 99 44.6 (7.6) 43.6 99 24.6 (1.5) 44.6 WI, POACs
Li, 2021 [69] China Retrospective 1207 661 NA 46.9 546 NA 47.03 POACs
Zaccarini, 2021 [70] France Retrospective 93 61 26.4 (4.7) 48.3 32 27.2 (6.0) 51 POACs,, PI & A
Jing, 2023 [71] China Retrospective 61 45 NA 49.06 16 NA 49.37 WI, POACs
Vázquez-Vicente a, 2024 [72] Spain Retrospective 117 39 25.4 (4.9) 47.1 78 25.6 (6.1) 46.8 WI, POACs
Vázquez-Vicente b, 2024 [72] Spain Retrospective 1156 633 25.1 (5.3) 46 523 25.7 (4.6) 48 WI, POACs
Total 11,631 5072 6559

NA: not available, PI & A: Pelvic infection & Abscess, POACs: postoperative aggregate complications, WI: wound infection

Figures 2 and 3 show that, compared to open surgery, MIS had a much lower risk of WI (OR, 0.19; 95% CI, 0.13–0.29, p < 0.001) with no heterogeneity (I2 = 0%) and POACs (OR, 0.49; 95% CI, 0.38–0.62, p < 0.001) with moderate heterogeneity (I2 = 48%) in women with CC. Figure 4 shows that there wasn’t a considerable difference in PI&A between MIS and OSC for CC patients (OR, 0.59; 95% CI, 0.31–1.16, p = 0.13), and there was also no overlap (I2 = 0%).

Fig. 2.

Fig. 2

The forest plot analysis shows how wound infection in cervical cancer patients is affected by minimally invasive surgery as opposed to OSC

Fig. 3.

Fig. 3

The forest plot analysis shows how POACs in cervical cancer patients were affected by minimally invasive surgery as opposed to OSC

Fig. 4.

Fig. 4

The forest plot of the minimally invasive surgery’s impact on PI&A in cervical cancer patients in comparison to OSC

Subgroup analysis of studies based on the use of MIS techniques with or without robotics showed a consistently significant effect size for wound infection outcome [(OR, 0.23; 95% CI, 0.15–0.37, p < 0.001), and (OR, 0.11; 95% CI, 0.05–0.28, p < 0.001), respectively] with no heterogeneity between studies (I2 = 0%). Similarly, POACs subgroup analysis based on robotics use in laparoscopic procedure revealed consistent significance [(OR, 0.54; 95% CI, 0.41–0.71, p < 0.001, I2 = 34%) without robotics, and (OR, 0.38; 95% CI, 0.23–0.62, p < 0.001, I2 = 66%).) with robotics use], respectively. The effect size for both outcomes was smaller for robotic-based laparoscopy procedures versus without robotics.

Subgroup analysis based on robotic-based laparoscopy for the PI &A outcome showed a significant effect with the conventional laparoscopy (OR, 0.40; 95% CI, 0.18–0.89, p = 0.02, I2 = 0%), while robotic based procedures resulted in non-significant pooled estimate (OR, 2.42; 95% CI, 0.51–11.41, p = 0.26, I2 = 0%).

The visual interpretation of the forest plot effect and the quantitative Egger regression test revealed no indication of investigation bias (p = 0.890). The findings revealed that the majority of relevant examinations lacked practical quality and exhibited bias in their selective reporting.

Discussion

Of the studies that were considered for the meta-analysis, 5072 of the 11,631 females with CC who were at baseline of the selected investigations were using MIS, and 6559 were using open surgical management [3072]. When compared to OSC, women with CC who underwent MIS had significantly fewer WI and POACs, but no discernible difference in PI&A. These findings are in accordance with the results of meta-analyses conducted by Kampers et al., [73], Zhang et al. [74], and Zhao et al. [75] which compared MIS versus OSC confirming the significant efficacy and safety of MIS with similar non-significance in the postoperative infection and abscess formation compared to OSC in the general and subgroup analysis. It is noteworthy that our results only included eight relevant studies in the PI&A outcome. Our analysis may be biased due to a limited number of researches comparing PI & A outcome between the two surgical techniques.

The small sample size of some of the chosen examinations (23 out of 44 ≤ 100 females) for meta-analysis requires caution when interpreting their results. Limited patient samples may introduce bias contingent upon the surgeon’s proficiency in novel surgical procedures, particularly robotic hysterectomy. This would impact how significant the evaluated assessments were [7686]. Therefore, randomized studies with larger sample size are needed to better validate the current evidence.

The use of Veress needles throughout the process might account for the dissimilarities in abdominal damage between MIS and open surgical management [87]. The Veress needle methodology is a contained method that entails the placement and retracting of a sharp-tipped 2-mm external needle, succeeded by a hollow blunt-tipped needle that advances to provide gas. Insufflation at different pressure, duration, or volume parameters happens before to the placement of the main trocar. This technique is the predominant entry method employed by gynecologists globally, and is associated with heightened chances of mild problems, such as preperitoneal injuries, as well as entry failure [88]. The 2012 Cochrane database determined that the open entry technique significantly reduces the rate of failed entry as opposed to the closed entry technique, without variation in the occurrence of visceral or vascular harm. The minimal incidence of reported complications linked to laparoscopic entry and the limited participant pool in the trials may explain the absence of a substantial disparity in major visceral and vascular injuries between the entry procedures [89]. Previous studies have shown that a Veress needle or trocar entrenched throughout laparoscopy causes most intestinal damage and WIs. A number of risk factors could produce subcutaneous emphysema in MIS [90, 91]. The skill of the surgeon could affect the frequency of complications when considered holistically. Regretfully, this study was unable to compare different surgeons. When comparing various surgical methods, the learning curve may also significantly impact issues. MIS gained preferred over open surgical care because to the problems of the surgical approach [92, 93]. Utilization of surgical tools has been connected to injuries, which could be the consequence of thermal injury because the elevated temperature of the tools harms the deeper or sub-mucosal tissues of the gut, bladder, and bowels. Previous studies have assessed the heat damage to the intestines caused by laparoscopic surgery [90]. Recall that the open surgical treatment approach raised the risk of heat injury, so surgeons needed to be attentive to this. All of these variables were associated with the development of WIs and POACs. This aligns with the results of the former meta-analyses. Refinement of laparoscopic-assisted vaginal RH is crucial because of the intricate nature of the female pelvic floor. Urinary tract injuries are a severe problem with MIS. The uterine ligament is identified and removed in the vaginal approach, which next involves pushing on the uterus to find the bladder and ureters [94]. The gradual drop in PI&A can be ascribed to the emergence of laparoscopy as a result of advances in surgical methods, equipment, and learning curves. Compared to OSC, complete laparoscopes and robotic RHs were linked with a lower risk of POACs [92]. An earlier study by Park et al., which investigated the unfavorable impacts of the three treatments, supported these results by indicating that MIS was superior than OSC in terms of minimizing overall difficulties for females with CC [10]. The results on POACs for the group that underwent open surgical management-aided vaginal RH might be biased because of the significant heterogeneity degree and small sample size. In the future, further high-quality cohort investigations will be required to compare and estimate the risk of POACs in MIS and OSC.

Eleven studies included robotic-based laparoscopy versus OSC. We compared both robotic and non-robotic laparoscopy to OSC. The results showed that robotic-based procedures had a significant but smaller effect size on the WI and POACs outcomes. These findings are consistent with a recently published meta-analysis, which reported that conventional laparoscopic procedures have a much lower operating time and overall complication rate. Robotic laparoscopy did not improve treatment outcomes, but its application did reduce blood loss [95].

This meta-analysis validated the effects of OSC and MIS on WI and CC control. Based on the current meta-analysis findings, MIS procedures can be a preferred alternative for open surgical procedures with better outcomes in terms of wound infection and the overall postoperative morbidities. Moreover, the surgeon’s skills and proficiency may influence the incidence of complications following the procedure. Further investigation is still needed to elucidate these plausible influences. This was also highlighted in earlier studies that generated equal impact levels through the use of a correlated meta-analysis technique [96103]. Well-led RCTs are crucial to take into account these aspects and the diversity of dissimilar ages and demographics of female participants, even if meta-analysis was unable to establish whether modifications in these features are associated to the values being studied. In conclusion, among female patients with CC, OSC resulted in dramatically decreased WIs as compared to MIS.

Limitations

Possible selection bias may have been present due to the exclusion of some studies in the meta-analysis. However, the publications that were excluded did not match the requirements to be included in the meta-analysis. However, we required the data in order to assess if demographic and age disparities had an impact on the outcomes. The objective of the exploration was to assess the influence of open surgical management and minimally invasive surgery (MIS) on wound infection (WI) and complication rate (CC) in the treatment. The presence of inaccurate or missing data in previous studies may have contributed to an increased bias. Aside from their age and race, the nutritional well-being of the girls was a possible factor contributing to discrimination. Inadequate data and unpublished investigations can lead to unwanted distortion of the value being examined.

Conclusions

When compared to OSC, MIS resulted in much lower WI and POACs; however, there was no discernible difference in PI&A rates among female patients with CC. However, the small sample size of several specified investigations (23 out of 44 ≤ 100 female patients) necessitates caution when interpreting the data in the meta-analysis, nevertheless. That would have an impact on how significant the evaluated assessments were.

Electronic Supplementary Material

Below is the link to the electronic supplementary material.

Supplementary Material 1 (35.4KB, docx)

Acknowledgements

None.

Author contributions

R.S., and M.M: Concept and methodology, N.Y. ,and J.L.: software, C.C., and H.W.: data curation, C.C. and H.W.: validation, N.Y., and M.M.: visualization, and J.L, R.S., H.W: writing. I confirm that the work is original; the work has not been, and will not be published, in whole, or in part, in any other journal; and all the authors have agreed to the contents of the manuscript in its submitted form.

Funding

No funding was received for this study.

Data availability

On request, the corresponding author is required to provide access to the meta-analysis database.

Declarations

Ethics approval and consent to participate

Not applicable.

Consent for publication

Not applicable.

Competing interests

The authors declare no competing interests.

Footnotes

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Supplementary Materials

Supplementary Material 1 (35.4KB, docx)

Data Availability Statement

On request, the corresponding author is required to provide access to the meta-analysis database.


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