Gupta Babita, Jain Vanita, Aggarwal Neelam
Department of Obstetrics and Gynecology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India.
Int J Gynaecol Obstet. 2006 Nov;94 Suppl 2:S139-S140. doi: 10.1016/S0020-7292(06)60014-3.