Clinical research of " shuangzi decoction " in treating anovulatory infertility in 76 cases .
双紫汤治疗无排卵性不孕症76例临床研究。
Prospective parallel randomized , double-blind , double-dummy controlled clinical trial comparing clomiphene citrate and metformin as the first-line treatment for ovulation induction in nonobese anovulatory women with polycystic ovary syndrome .