[1] Publ Hlth Fdn India, Ctr Chron Condit & Injuries, Gurgaon 122002, Haryana, India
[2] Univ Glasgow, Dept Cardiovasc Genom & Therapeut, Glasgow G12 8QQ, Lanark, Scotland
[3] Imperial Coll London, Dept Prevent Cardiovasc Med, London SW7 2AZ, England
[4] London Sch Hyg & Trop Med, Dept Epidemiol, London WC1E 7HT, England
[5] All India Inst Med Sci, Dept Cardiol, New Delhi 110029, India