1. From the British Heart Foundation Glasgow Cardiovascular Research Centre (L.P., C.E.H., W.S.L., C.H., S.M., A.F.D., G.T.M., S.P.), Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, United Kingdom; College of Medicine, Dentistry, and Nursing (J.M.C.C.), Ninewells Hospital, University of Dundee, Dundee, United Kingdom.