1. From the Akershus University Hospital (T.O.), Lorenskog, Norway; Research Institute for Internal Medicine, Rikshospitalet (T.U., P.A.), University of Oslo (T.O.), Oslo, Norway; Donald W. Reynolds Cardiovascular Research Center (M.H.D., J.A.d.L.), University of Texas Southwestern Medical Center, Dallas; Division of Cardiology (M.A.), University of Utah Health Sciences Center, Salt Lake City; and Donald W. Reynolds Cardiovascular Research Center (S.A.M.), Brigham and Women’s Hospital, Boston, Mass.