Combined gonadotropin releasing hormone agonist/human menopausal gonadotropin therapy (GnRH-a/hMG) in normal, high, and poor responders to hMG - Ben Rafael,Z.; Bider,D.; Dan,U.; Zolti,M.; Levran,D.; Mashiach,S. (J In Vitro Fert Embryo Transf, 1991)