1. Department of Anaesthesia, All India Institute of Medical Sciences (AIIMS), Rishikesh, Uttarakhand, India
2. Department of Trauma and Emergency, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
3. Department of Cardiovascular and Thoracic Surgery (CTVS), All India Institute of Medical Sciences (AIIMS), Rishikesh, Uttarakhand, India