Tincello Douglas G, Teare Joanna, Fraser William D
Department of Obstetrics & Gynaecology, University of Leicester, Robert Kilpatrick Clinical Sciences Building, Leicester Royal Infirmary, Leicester LE2 7LX, UK.
Eur J Obstet Gynecol Reprod Biol. 2003 Feb 10;106(2):237-8. doi: 10.1016/s0301-2115(02)00360-3.