Fifty-eight women with tubal infertility were randomized into two groups : 30 in an experimental group treated with Xiaoyao powder ( Shugan ) plus gonadotropin-releasing hormone analog ( GnRHa ) / follicle-stimulating hormone ( FSH ) / human chorionic gonadotropin ( hCG ) and 28 in the control group who were treated with GnRHa/FSH / hCG only .