“…10,18,32,33,39,41,48,51,53,56 Of them, five studies 33,51,53,56 were assessed as having unclear risk of bias and the other five studies were assessed as having high risk of bias. 10,18,32,41,48 Regarding NOS for the non-RCTs, 6,14,20,[29][30][31][34][35][36][37]39,40,[42][43][44][45][46][47]49,50,52,54,55,57 there were 10 studies assessed as having unclear risk 6,14,29,30,37,40,45,49,…”