A Mishra1, R Purvar2, S Malik2, K Agarwal2, R Gera3, S Sridhar3. 1. Department of Obstetrics and Gynaecology, V.M.M.C. and Safdarjang Hospital, South Delhi, Delhi 110029 India ; House No. 26-A, Pocket 4, Mayur Vihar Phase-1, East Delhi, Delhi 110091 India. 2. Department of Obstetrics and Gynaecology, V.M.M.C. and Safdarjang Hospital, South Delhi, Delhi 110029 India. 3. Department of Paediatrics, V.M.M.C. and Safdarjang Hospital, South Delhi, Delhi 110029 India.