Anjan Das, Tushar Kanti Saha1, Saikat Majumdar2, Rahul Deb Mandal3, Anindya Mukherjee2, Subrata Kumar Mandal
Department of Anaesthesiology, S. D. Medical College, 1Community Medicine and 2Anaesthesiology, Nil Ratan Sircar Medical College, Kolkata, 3Gynaecology and Obstetrics, Burdwan Medical College, Burdwan, West Bengal, India