Singhal Savita Rani, Agarwal Umber, Sangwan Krishna, Khosla Anju, Singhal Suresh
Department of Obstetrics and Gynecology, Post-Graduate Institute of Medical Sciences, Rohtak-124001, Haryana, India.
Acta Obstet Gynecol Scand. 2005 Feb;84(2):196-7. doi: 10.1111/j.0001-6349.2005.0255a.x.