Author: Catherine Y. Spong

Edited by John T. Queenan, MD, Professor and Chair Emeritus, Department of Obstetrics & Gynecology, Georgetown University School of Medicine , Washington, DC, USA Catherine Y. Spong, MD, Bethesda, MD, USA Charles J. Lockwood, MD, Anita O”Keeffe Young Professor & Chair, Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA