Sherer David M, Hellmann Mira, Gorelick Constantine, Lee Yi-Chun, Abdelmalek Ehab, Sokolovski Margarita, Abulafia Ovadia
Department of Obstetrics and Gynecology, State University of New York, Downstate Medical Center, Brooklyn 11203-2098, USA.
J Ultrasound Med. 2006 Apr;25(4):515-7. doi: 10.7863/jum.2006.25.4.515.