Bagga R, Chaudhary N, Kalra J
Department of Obstetrics and Gynaecology, Postgraduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh-160012, India.
Int J Gynaecol Obstet. 2004 Oct;87(1):42-3. doi: 10.1016/j.ijgo.2004.05.019.