“…Most of the studies included in our review had scored 3 (Gerber, 2006;Lamb et al, 2010, Stinson et al, 2010Elander et al, 2011;Bromberg et al, 2012;Carpenter et al, 2012;Krein et al, 2013;Kroenke et al, 2012;Law et al, 2012;Martorella et al, 2012;Ruehlman et al, 2012) as blinding was not possible in most of the studies. Only two studies scored less on Jadad score (Miller et al, 2011;Shigaki et al, 2013) ( Table 2). (Table 3).…”