Institution: | 1. Department of Obstetrics and Gynecology, School of Medicine, East Carolina University. Greenville, North Carolina, U.S.A.;2. Department of Obstetrics and Gynecology New Jersey Medical School, Newark, New Jersey, U.S.A.;3. Department of Pediatrics, University of Medicine and Dentistry, New Jersey Medical School, Newark, New Jersey, U.S.A. |