From the Department of Anesthesiology, Sree Balaji Medical College & Hospital, BIHER, Chennai, Tamil Nadu, India

Correspondence to Raghuraman M. Sethuraman, Department of Anesthesiology, Sree Balaji Medical College & Hospital, BIHER, #7, Works Road, New Colony, Chromepet, Chennai 600044, Tamil Nadu, India. Tel: +91 6379141854; e-mail: [email protected]