Halder Atin, Pati Shyamapada, Mukherjee Goutam, Halder Saswati
Department of Obstetrics and Gynecology, North Bengal Medical College and Hospital, Sushrutanagar, Darjeeling, 734 034 India ; 7, Swamiji Sarani, Hakimpara, Siligur1, Darjeeling, West Bengal 743001 India.
J Obstet Gynaecol India. 2012 Feb;62(1):76-8. doi: 10.1007/s13224-011-0102-z. Epub 2012 Jan 17.