1. From the Department of Cardiology, Copenhagen University Hospital Gentofte, Hellerup (M.L., J.B.O., M.H.R., C.M.H., D.K., S.L.K., C.T.-P., G.H.G., M.L.H.); and Department of Cardiology, the Heart Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark (L.K.).