Savona-Ventura Charles, Buttigieg George G, Grima Stephen
Department of Obstetrics and Gynecology, Mater Dei University Hospital, University of Malta, Malta.
Int J Gynaecol Obstet. 2008 May;101(2):189-91. doi: 10.1016/j.ijgo.2007.12.001. Epub 2008 Mar 4.