Daskalakis George, Papantoniou Nikolaos, Mesogitis Spyros, Papageorgiou John, Antsaklis Aris
First Department of Obstetrics and Gynecology, Fetal Medicine Unit, Alexandra Hospital, University of Athens, Athens, Greece.
J Ultrasound Med. 2005 Nov;24(11):1565-8. doi: 10.7863/jum.2005.24.11.1565.