5092 | Yang, 2020 | 1 | 13 | 3 | not a RCT | high risk of bias | |
5228 | Bean, 2020 | 1 | 19 | 3 | not a RCT | high risk of bias | |
5295 | Zhang, 2020 | 1 | 13 | 3 | not a RCT | high risk of bias | |
5331 | Li, 2020 | 1 | 13 | 4 | not a RCT | high risk of bias | |
5332 | Meng, 2020 | 1 | 13 | 4 | not a RCT | high risk of bias | |
5345 | Yan et al., 2020 | 1 | 20 | 4 | not a RCT | high risk of bias | |
5347 | Mehra, 2020 | 2 | 12 | 4 | excluded | not a RCT | high risk of bias |