1. Department of Clinical Sciences, Division of Cardiology, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden (T.J.).
2. Department of Medical Sciences, Cardiology (B.L., S.K.J.), Uppsala University, Sweden.
3. Uppsala Clinical Research Center (B.L., O.O., S.K.J.), Uppsala University, Sweden.
4. Department of Medical and Health Sciences and Department of Cardiology, Linköping University, Sweden (J.A.).
5. Department of Medicine, Solna, Centre for Resuscitation Science, Karolinska Institutet, Stockholm, Sweden (E.B.).
6. Department of Medicine, Växjö Hospital, Sweden (O.B.).
7. Department of Medicine, Division of Cardiology, Kalmar Regional Hospital, Sweden (A.E.).
8. Department of Clinical Sciences, Cardiology, Lund University, Sweden (D.E., D.S., T.Y.).
9. Department of Molecular and Clinical Medicine and Sahlgrenska University Hospital, Department of Cardiology, University of Gothenburg, Sweden (J.H., E.O., A.R.-F.).
10. Department of Health Sciences, University of Borås, Sweden (J.H.).
11. Department of Medicine, Kristianstad Hospital, Sweden (R.J.).
12. Department of Cardiology, Örebro University Hospital, Sweden (T.K.).
13. Department of Internal Medicine, Division of Cardiology, Ryhov Hospital, Jönköping, Sweden (J.L.).
14. Department of Public Health and Clinical Medicine, Umeå University, Sweden (K.L.).
15. Department of Medicine, Halland Hospital, Halmstad, Sweden (M.L.).
16. Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden (M.L.).
17. Department of Clinical Science and Education, Division of Cardiology, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden (L.L., R.F.).
18. Department of Medicine, Ljungby Hospital, Sweden (C.N.).
19. Department of Medicine, Division of Cardiology, Karolinska Institutet, Solna, and Karolinska University Hospital, Stockholm, Sweden (J.P.).