Study Selection and Data Extraction
Two reviewers (EP, GNK) conducted study selection and data extraction
separately. Any discrepancies were resolved by a third reviewer (TP)
through discussion and consensus. Mendeley© (v.1.19.8)
was used as a reference manager, and duplicates were removed. Predefined
collection forms proposed by Cochrane collaboration for Intervention
Reviews 11 were used for data extraction. In case of
questions about study eligibility or data provided by the studies, the
paper authors were contacted.