1. Departments of Onco-Anaesthesia and Palliative Medicine, Dr. B. R. Ambedkar Institute Rotary Cancer Hospital, AIIMS, New Delhi, India
2. VA Palo Alto Healthcare System, Palo Alto, California, USA,
3. Department of Medicine, Stanford University School of Medicine, Palo Alto, California, USA,
4. Stanford Healthcare, Palo Alto, California, USA,
5. Surgical Oncology, Dr. B. R. Ambedkar Institute Rotary Cancer Hospital, AIIMS, New Delhi, India