Prakash Smita, Kumar Amitabh, Kumar Meenakshi, Gogia Anoop R
Department of Anaesthesia and Intensive Care, Vardhman Mahavir Medical College and Safdarjang Hospital, New Delhi, India.
Indian J Anaesth. 2013 Jan;57(1):90-1. doi: 10.4103/0019-5049.108587.