Acs N, Bánhidy F, Puhó E, Czeizel A E
Second Department of Obstetrics and Gynecology, Semmelweis University, School of Medicine, and Foundation for the Community Control of Hereditary Diseases, Budapest, Hungary.
Int J Gynaecol Obstet. 2006 Apr;93(1):55-6. doi: 10.1016/j.ijgo.2005.12.031. Epub 2006 Mar 10.