Table A1.

Excluded articles and reasons for exclusion (n = 55).

References	Reason for Exclusion
Abou El-Kassem et al. [49]	4
Alberto et al. [50]	2
Amobonye et al. [51]	3
Ayob and Simarani [42]	2
Baazeem et al. [43]	2
Bajwa et al. [52]	1
Bastos et al. [53]	4
Bensaci et al. [54]	2
Bezerra et al. [55]	2
Bezerra et al. [56]	2
Borgi et al. [57]	1
Bryant et al. [58]	4
Cairney and Burke [59]	1
da Silva et al. [60]	2
da Silva et al. [61]	1
De Azevedo Silva et al. [62]	2
Devi et al. [63]	2
El-Gendy [64]	1
Fouda et al. [38]	2
George et al. [65]	2
Gupta et al. [36]	2
Hassan [66]	2
Indarmawan et al. [67]	1
Jagannath et al. [68]	2
Jalili et al. [69]	2
Kapoor et al. [70]	2
Katoch et al. [71]	2
Katoch et al. [72]	2
Kudryavtseva et al. [73]	5
Kumar et al. [74]	4
Kuzhalvaymani et al. [75]	1
Leake and Read [76]	1
Lindstrom et al. [77]	2
Liu et al. [78]	1
Lopez-Llorca et al. [79]	4
Lumyong et al. [80]	2
Maccheroni et al. [81]	2
Martins et al. [82]	2
Meshram et al. [39]	2
Mishra et al. [83]	2
Monteiro et al. [84]	2
Orlandelli et al. [85]	2
Prathyusha et al. [86]	2
Rajagopal et al. [87]	2
Rajesh and Ravishankar Rai [88]	2
Reddy et al. [89]	2
Santos et al. [90]	2
Seshagiri and Tallapragada [91]	2
Sharma et al. [92]	2
Silva et al. [93]	2
Sopalun and Iamtham [94]	2
Sopalun et al. [95]	2
Swetha et al. [96]	2
Wu et al. [97]	2
Zaferanloo et al. [98]	2