Clinical Trial, Obstet Gynecol 2005 May;105(5 Pt 1):991-8 DOI: 10.1097/01.AOG.0000157109.05453.84 Grace Chang, Tay K McNamara, E John Orav, Danielle Koby, Alyson Lavigne, Barbara Ludman, Nori Ann Vincitorio, Louise Wilkins-Haug Abstract Objective: To test
