Adolescent and pediatric gynecology: Edited by Paula J. Adams Hillard
Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
Correspondence to Michelle Vichnin, Medical Affairs, Merck Global Vaccines and Infectious Diseases, West Point, PA; Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA Tel: +1 215 652 1608; fax: +1 215 993 2350; e-mail: [email protected]
doi: 10.1097/GCO.0b013e32830d0ce1