Fig. 2From: The effects of acupuncture on pregnancy outcomes of in vitro fertilization: a systematic review and meta-analysisEffect of acupuncture on the clinical pregnancy rates in women undergoing IVF. Villahermosa 2013 had one acupuncture group and two control groups (sham acupuncture group and no intervention control group), two control groups were grouped separately for relevant subgroup analysis, and when calculated the total pooled risk ratio (RR), we took them togetherBack to article page