1. Department 7812, Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research; Blegdamsvej 9 Copenhagen Denmark 2100
2. Odense University Hospital and University of Southern Denmark; Center for Evidence-Based Medicine; Sdr. Boulevard 29, Gate 50 (Videncenteret) Odense C Denmark 5000
3. Barsebäcksvägen 39 Löddeköpinge Sweden 24630
4. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; The Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Denmark DK-2100
5. Holbaek Hospital; Department of Cardiology; Holbaek Denmark 4300