Fig. 6From: Assisted reproductive techniques with congenital hypogonadotropic hypogonadism patients: a systematic review and meta-analysisFrequencies of abortion and multiple pregnancies. (a)Different colors represent four adverse events, including abortion(blue),multiple pregnancy(red),OHSS(green) and ectopic pregnancy(purple);(b)8.20% patients of all suffered abortion(red);(c)12.8% patients of all had multiple pregnancy. Y=Yes; N=NoBack to article page