“…Finally, 9 RCTs were selected for this systematic review where there were 3 RCTs published in Chinese (He et al, 2011;Qiang et al, 2011;Wang et al, 2012), and others were published in English (Mustian et al, 2004;Mustian et al, 2006;Rausch 2007;Mustian et al, 2008). In addition, five RCTs resulted from the same population or trial were included in our study (Mustian et al, 2004;Mustian et al, 2006;Mustian et al, 2008;Janelsins et al, 2011;Sprod et al, 2012). Among them, only the trial performed by Mustian (2006) together with the other four RCTs (Rausch 2007;He et al, 2011;Qiang et al, 2011;Wang et al, 2012) was included in the meta-analysis.…”