Dueñas-Garcia Omar F, Young Constance
Department of Obstetrics and Gynecology, Bronx-Lebanon Hospital Center, Albert Einstein College of Medicine, New York, USA.
Int J Gynaecol Obstet. 2011 Aug;114(2):153-4. doi: 10.1016/j.ijgo.2011.02.021. Epub 2011 Jun 15.