Ali Qazi Ehsan, Amir Syed Hussain, Siddiqui Obaid Ahmad, Jamil Shaista
Department of Anaesthesiology, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
Indian J Anaesth. 2013 Nov;57(6):620-2. doi: 10.4103/0019-5049.123342.