1. Department of Anaesthesiology, Dr. Ram Manohar Lohia Hospital and Postgraduate Institute of Medical Education and Research (Pgimer), New Delhi, India
2. Department of Onco-Anaesthesia and Palliative Medicine, BRAIRCH, All India Institute of Medical Sciences (AIIMS), New Delhi, India
3. Department of Anaesthesiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India