A prospective randomized comparison of routine buserelin acetate and a decreasing dosage of nafarelin acetate with a low-dose gonadotropin-releasing hormone agonist protocol for in vitro fertilization and intracytoplasmic sperm injection - Takeuchi,S.; Minoura,H.; Shibahara,T.; Tsuiki,Y.; Noritaka,F.; Toyoda,N. (Fertil Steril, 2001)