1. Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Denmark (J.H.B., E.L.F., L.Ø,A.Y., L.K.).
2. Department of Cardiology, Herlev-Gentofte University Hospital, Hellerup, Denmark (C.A., G.H.G.).
3. Department of Medicine, Section of Cardiovascular Medicine, Boston Medical Center, Boston University, MA (C.A.).
4. Departments of Cardiology (M.S.), Herlev-Gentofte University Hospital, Herlev, Denmark.
5. The Danish Heart Foundation, Copenhagen, Denmark (T.A.G., M.P., G.H.G.).
6. Department of Biostatistics, University of Copenhagen, Denmark (T.A.G.).
7. Neurology (C.K.), Herlev-Gentofte University Hospital, Herlev, Denmark.
8. Department of Clinical Research and Cardiology, Nordsjællands Hospital, Hillerød, Denmark (C.T.-P.).