1 Department of Anaesthesiology and Intensive Care, G B Pant Institute of Postgraduate Medical Education and Research, J L Nehru Marg, New Delhi, India.
2 Department of Cardiac Anaesthesia, PGIMS Rohtak, Haryana, India.
3 Department of Cardiac Anaesthesia, Superspeciality Hospital, NSCB Medical College, Jabalpur, MP, India.
4 Department of Cardiothoracic Surgery, G B Pant Institute of Postgraduate Medical Education and Research, J L Nehru Marg, New Delhi, India.