Ong Nicole C S, Ostör Andrew G
The Royal Women's Hospital, Department of Pathology and Department of Obstetrics and Gynaecology, University of Melbourne, Melbourne, Victoria, Australia.
Aust N Z J Obstet Gynaecol. 2002 Nov;42(5):561-2. doi: 10.1111/j.0004-8666.2002.548_9.x.