[1] Aarupadai Veedu Med Coll, Dept Anaesthesiol, Pondicherry, India
[2] Karnataka Inst Med Sci KIMS, Dept Anaesthesiol, Hubballi, Karnataka, India
[3] Apollo Multispecial Hosp, Dept Anaesthesia, Kolkata, W Bengal, India
[4] Sri Ramachandra Inst Higher Educ & Res, Dept Anaesthesiol & Pain Med, Chennai, Tamil Nadu, India
[5] Adesh Inst Med Sci & Res AIMSR, Dept Anaesthesiol & Intens Care, Bathinda, Punjab, India
[6] Armed Forces Medial Coll, Dept Anaesthesiol & Crit Care, Pune, Maharashtra, India