American College of Obstetricians and Gynecologists 50th anniversary meeting. April 28-May 2, 2001. Chicago, Illinois, USA. Abstracts.
D005260:Female; D005831:Genital Diseases, Female; D006176:Gynecology; D006801:Humans; D009774:Obstetrics; D011247:Pregnancy; D011248:Pregnancy Complications