1. From the Department of Cardiology (G.K., R.S.M., N.M., B.S., S.S., V.K.B.) and Department of Biostatistics (M.K.), All India Institute of Medical Sciences, New Delhi, India; and Department of Medicine and Population Health Research Institute, Hamilton General Hospital (G.K., J.W.E.) and Department of Medicine (J.H.), Henderson Hospital Site, McMaster University, Hamilton, Ontario, Canada.