1. From the Department of Public Health (J.D.L., P.S.J., M.G., A.B., K.M.), British Heart Foundation, Glasgow Cardiovascular Research Centre (P.S.J., J.J.V.M.), and Cardiovascular and Medical Sciences (M.W., P.L.), University of Glasgow, United Kingdom; Information Services Division (J.W.T.C., A.R., L.K.), Edinburgh, United Kingdom; and the Department of Public Health (S.C.), University of Liverpool, Liverpool, United Kingdom.