Table 2.

Cochrane Risk of bias assessment.

	Random sequence generation	Allocation concealment	Participant and personnel blinding	Outcome Assessment Blinding	Incomplete outcome data	Selective reporting	Other bias
Avila-Ortiz et al., (2020) [1]
Barone et al., (2014) [6]
Meloni et al., (2015) [7]
Guarnieri et al., (2017) [8]
Maiorana et al., (2017) [9]
Machtei et al., (2019) [10]
De Carvalho Formiga et al., (2019) [11]
Cardaropoli et al., 2012 [12]
					Low	Unclear	High