[1] Cntr Chron Dis Control, New Delhi, India
[2] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[3] Indira Gandhi Mem Cooperat Hosp, Ernakulam, India
[4] Med Coll Kozhikode, Calicut, Kerala, India
[5] Westfort Hitech Hosp Ltd, Cardiol, Trichur, India