1. Department of Anaesthesiology, Kalyan Singh Super Specialty Cancer Institute, Lucknow, Uttar Pradesh, India
2. Department of Anaesthesiology and Critical Care, Jawaharlal Nehru Medical College Hospital, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
3. Department of Onco-Anaesthesia, Pain and Palliative Medicine, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India