1. From the Center for Clinical Epidemiology, Lady Davis Institute (P.M., B.H., P.R., M.H.S., M.J.E., K.B.F.) and Division of Cardiology (M.J.E.), Jewish General Hospital, Montreal, Quebec, Canada; and Departments of Epidemiology, Biostatistics, and Occupational Health (M.J.E., K.B.F.) and Department of Medicine (K.B.F.), McGill University, Montreal, Quebec, Canada.