Aayush K Singal1, Sivasubramanian Ramakrishnan1, Balram Bhargava1,2. 1. Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India (A.K.S., S.R., B.B.). 2. Indian Council of Medical Research, New Delhi, India and Department of Health Research (Ministry of Health and Family Welfare), Government of India, New Delhi, India (B.B.).