Assessment of risk of bias in included studies
The Cochrane risk of bias tool version 1 was used to assess the risk of
bias of the included studies by two review authors independently (VVR
and KM)16. The risk of bias was evaluated based on the
following five domains - selection bias, performance bias, detection
bias, attrition bias, reporting bias, and other bias. Any disagreement
between the reviewers was resolved by discussion or consultation with
the third author (PBH).