Table 4.

Risk of bias within studies according to the Cochrane risk of bias assessment tool for randomized controlled trials.

Study	Random sequence generation	Concealment of allocation	Blinding	Blinding of outcome	Incomplete outcome data	Selective reporting	Other bias
Gupta et al. (23)	+	+	+	+	+	?	+
Parcha et al. (24)	+	+	+	+	+	?	+