Agarwal Nutan, Gupta Monica, Singh Nilanchali, Kachhawa Garima, Kriplani Alka
Department of Obstetrics and Gynecology, All India Institute of Medical Sciences, New Delhi, India.
J Obstet Gynaecol India. 2015 Dec;65(6):417-9. doi: 10.1007/s13224-015-0677-x. Epub 2015 Mar 26.