Fig. 3.

Cochrane risk assessment analyses of four clinical trials. Of these, three were RCTs and one was clinical trial-pilot study without randomization, blinding and control. The image was prepared using Review Manager 5.4.1 software. For the pilot study, the authors were unclear about blinding for data analysis. The doubt was cleared through email conversations. An email was sent to Dr Cantini on 31^st January 2022 and a reply was received on the same day. Dr Fabrizio Cantini wrote ‘no blinding method was employed for data analysis in our work’.