1. Department 7812, Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research; Blegdamsvej 9 Copenhagen Denmark 2100
2. Cardiology Section; Department of Internal Medicine; Smedelundsgade 60 Holbaek Danmark Denmark 4300
3. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Denmark DK-2100
4. Holbaek Hospital; Department of Cardiology; Holbaek Denmark 4300
5. University of Southern Denmark; Department of Regional Health Research, the Faculty of Health Sciences; Holbaek Denmark