[1] Aga Khan Univ, Res & Grad Studies, Off Vice Provost, Karachi, Pakistan
[2] Baylor Coll Med, Dept Med, Sect Cardiol, Houston, TX USA
[3] Aga Khan Univ, Dept Med, Karachi, Sindh, Pakistan
[4] New York Univ Langone Hlth, Leon H Charney Div Cardiol, New York, NY USA
[5] Shandong Univ, Cheeloo Coll Med, Sch Publ Hlth, Dept Epidemiol, Jinan, Peoples R China
[6] Houston Methodist DeBakey Heart & Vasc Ctr, Dept Cardiol, Houston, TX USA
[7] Forrest Gen Hosp, Div Med, Hattiesburg, MS USA
[8] Aga Khan Univ, Div Cardiol, Karachi, Sindh, Pakistan
[9] Aga Khan Univ, Dept Family Med, Karachi, Sindh, Pakistan
[10] Univ South Carolina, Arnold Sch Publ Hlth, Dept Epidemiol & Biostat, Columbia, SC USA
[11] Texas Heart Inst, Houston, TX USA
[12] Baylor Coll Med, Dept Med, Sect Cardiovasc Res, Houston, TX USA
[13] Aga Khan Univ, Res, Stadium Rd,POB 3500, Karachi 78400, Sindh, Pakistan