A Mishra1, S Malik2, K Agarwal2, A Yadav3, A Gautam2. 1. Department of Obstetrics and Gynaecology, V.M.M.C. and Safdarjung Hospital, Delhi, 110029 India ; House No. 26-A, Pocket 4, Mayur Vihar Phase-1, Delhi, 110091 India. 2. Department of Obstetrics and Gynaecology, V.M.M.C. and Safdarjung Hospital, Delhi, 110029 India. 3. Department of Pathology, V.M.M.C. and Safdarjung Hospital, Delhi, 110029 India.