Table 1.
Risk of bias assessment of included studies
| First author | Q 1 | Q 2 | Q 3 | Q 4 | Q 6 | Q 7 | Q 8 | Risk of bias | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Y | N | Y | N | Y | N | Y | N | Y | N | Y | N | Y | N | ||
| Doms [7] | X | X | X | X | X | X | X | Moderate | |||||||
| Esfahani [8] | X | X | X | X | X | X | X | Moderate | |||||||
| Salem [9] | X | X | X | X | X | X | X | Moderate | |||||||
| Matzen [10] | X | X | X | X | X | X | X | Low | |||||||
| Läubli [11] | X | X | X | X | X | X | X | Moderate | |||||||
| Zimmer [12] | X | X | X | X | X | X | X | Moderate | |||||||
| Behling [13] | X | X | X | X | X | X | X | Moderate | |||||||
| Semper [14] | X | X | X | X | X | X | X | Low | |||||||
| Mahmood [15] | X | X | X | X | X | X | X | High | |||||||
| Jain [16] | X | X | X | X | X | X | X | High | |||||||
| Liu [17] | X | X | X | X | X | X | X | Moderate | |||||||
| Frigeri [18] | X | X | X | X | X | X | X | Moderate | |||||||
| Norwood [19] | X | X | X | X | X | X | X | Moderate | |||||||
| Arangalage [20] | X | X | X | X | X | X | X | X | High | ||||||
| Yogasundaram [21] | X | X | X | X | X | X | X | Moderate | |||||||
| Tay [22] | X | X | X | X | X | X | X | Moderate | |||||||
| Tadokoro [23] | X | X | X | X | X | X | X | Moderate | |||||||
| Gibson [24] | X | X | X | X | X | X | X | Moderate | |||||||
| Guiney [25] | X | X | X | X | X | X | X | High | |||||||
| Osnat [26] | X | X | X | X | X | X | X | Moderate | |||||||
| Mehta [27] | X | X | X | X | X | X | X | Moderate | |||||||
| Reuben [28] | X | X | X | X | X | X | X | High | |||||||
| Tajmir-Riahi [29] | X | X | X | X | X | X | X | Moderate | |||||||
| Berg [30] | X | X | X | X | X | X | X | Moderate | |||||||
| Samara [31] | X | X | X | X | X | X | X | High | |||||||
| Khoury [32] | X | X | X | X | X | X | X | High | |||||||
| Katsume [33] | X | X | X | X | X | X | X | Moderate | |||||||
| Yanase [34] | X | X | X | X | X | X | X | Moderate | |||||||
| Reddy [35] | X | X | X | X | X | X | X | High | |||||||
| Ganatra [36] | X | X | X | X | X | X | X | Moderate | |||||||
| Fukusawa [37] | X | X | X | X | X | X | X | Moderate | |||||||
| Heinzerling [71] Case 1,5 & 8 | X | X | X | X | X | X | X | Low | |||||||
| Imai [38] | X | X | X | X | X | X | X | High | |||||||
| Johnson [39] Case 1 & 2 | X | X | X | X | X | X | X | High | |||||||
| Nasr [40] | X | X | X | X | X | X | X | Moderate | |||||||
| Rota [41] Case 1 & 2 | X | X | X | X | X | X | X | Moderate | |||||||
| Yamaguchi [42] | X | X | X | X | X | X | X | Moderate | |||||||
| Chen [43] | X | X | X | X | X | X | X | Moderate | |||||||
| Nierstedt [44] | X | X | X | X | X | X | X | High | |||||||
| Christina [45] | X | X | X | X | X | X | High | ||||||||
| Copeland-Halperin [46] | X | X | X | X | X | X | X | High | |||||||
| Gallegos [47] | X | X | X | X | X | X | X | High | |||||||
| Inayat [48] | X | X | X | X | X | X | Moderate | ||||||||
| Lopez [49] Case 1 | X | X | X | X | X | X | X | High | |||||||
| Lopez [49] Case 2 | X | X | X | X | X | X | X | High | |||||||
| Martinez-Calle [50] | X | X | X | X | X | X | X | Moderate | |||||||
| Monge [51] | X | X | X | X | X | X | X | High | |||||||
| Sakai [52] | X | X | X | X | X | X | X | High | |||||||
| Balanescru [53] Case 1 | X | X | X | X | X | X | X | Low | |||||||
| Balanescru [53] Case 2 & 3 | X | X | X | X | X | X | X | Moderate | |||||||
| Guo [54] Case 1 & 3 | X | X | X | X | X | X | X | Low | |||||||
| Guo [54] Case 2 & 5 | X | X | X | X | X | X | X | Moderate | |||||||
| Bukamur [55] | X | X | X | X | X | X | X | High | |||||||
| Agrawal [56] Case 1,2 & 3 | X | X | X | X | X | X | X | Low | |||||||
| Agrawal [56] Case 4 | X | X | X | X | X | X | X | High | |||||||
| Agrawal [56] Case 5 | X | X | X | X | X | X | X | Moderate | |||||||
| Arora [57] Case 1,2,3,7 | X | X | X | X | X | X | X | High | |||||||
| Arora [57] Case 4 | X | X | X | X | X | X | X | High | |||||||
| Arora [57] Case 8 | X | X | X | X | X | X | X | High | |||||||
| Xing [58] | X | X | X | X | X | X | X | High | |||||||
| Kimura [59] | X | X | X | X | X | X | X | Moderate | |||||||
| Fazel [60] | X | X | X | X | X | X | X | High | |||||||
| Hardy [61] | X | X | X | X | X | X | X | Moderate | |||||||
| Saibil [62] | X | X | X | X | X | X | X | High | |||||||
| Ansari-Gilani [63]Case 1& 2 | X | X | X | X | X | X | X | Moderate | |||||||
| Ansari-Gilani [63] Case 3 | X | X | X | X | X | X | X | High | |||||||
| McDowall [64] | X | X | X | X | X | X | X | Moderate | |||||||
| Shah [65] | X | X | X | X | X | X | X | High | |||||||
| Joseph [66] | X | X | X | X | X | X | X | High | |||||||
| Zhang [67] | X | X | X | X | X | X | X | High | |||||||
| Konstantina [68] Case 1 | X | X | X | X | X | X | X | High | |||||||
| Konstantina [68] Case 2 | X | X | X | X | X | X | X | High | |||||||
| Wang [69] | X | X | X | X | X | X | X | High | |||||||
| von Itzstein [70] | X | X | X | X | X | X | X | High | |||||||
|
Total: 87 cases |
20 | 67 | 67 | 67 | 59 | 29 | 87 | 87 | 62 | 25 |
Low risk: 11 Moderate risk: 38 Moderate risk: 38 |
||||
Y: yes, N: no, Q: question
Question 1: Does the patient(s) represent(s) the whole experience of the investigator (centre) or is the selection method unclear to the extent that other patients with similar presentation may not have been reported?
Question 2: Was the exposure adequately ascertained?
Question 3: Was the outcome adequately ascertained?
Question 4: Were other alternative causes that may explain the observation ruled out?
Question 5: Was there a challenge/re-challenge phenomenon?
Question 6: Was there a dose–response effect?
Question 7: Was follow-up long enough for outcomes to occur?
Question 8: Is the case(s) described with sufficient details to allow other investigators to replicate the research or to allow practitioners make inferences related to their own practice?