“…In the randomization process, 52.9% of the clinical trials were rated as high risk of bias 12,32,33,35,37,40‐42 . For the missing outcome data, 94.1% of the clinical trials were rated as low risk of bias 12,29‐41,43 . Finally, for the selection of the reported result, 76.5% of the clinical trials were rated as some concerns 12,30‐41 …”