title: American College of Obstetricians and Gynecologists (ACOG) 47th annual clinical meeting. Philadelphia, Pennsylvania, USA. May 15-19, 1999. Abstracts.
mesh_terms: D005260:Female; D005831:Genital Diseases, Female; D006176:Gynecology; D006801:Humans; D009774:Obstetrics; D011247:Pregnancy; D011248:Pregnancy Complications