1. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; The Cochrane Hepato-Biliary Group; Blegdamsvej 9 Copenhagen Sjaelland Denmark DK-2100
2. Holbaek Hospital; Department of Cardiology; Holbaek Denmark 4300
3. Department 7812, Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research; Blegdamsvej 9 Copenhagen Denmark 2100
4. Rigshospitalet, Copenhagen University Hospital; Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812; Blegdamsvej 9 Copenhagen Denmark 2100
5. Clinical Hospital Centre Rijeka; Department of Gastroenterology; Kresimirova 42 Rijeka Croatia 51 000
6. Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital; Copenhagen Denmark
7. Heidelberg University Hospital; Internal Medicine IV: Gastroenterology, Infectious Diseases, Toxicology; Im Neuenheimer Feld 410 Heidelberg Germany D-69120
8. University of Nis; Medical Faculty; Boulevard Dr Zorana Djindjica 81 Nis Serbia 18000
9. Medical Faculty, University of Nis; Department of Internal Medicine; Zorana Djindjica 81 Nis Serbia 18000
10. Beijing University of Chinese Medicine; Centre for Evidence-Based Chinese Medicine; 11 Bei San Huan Dong Lu, Chaoyang District Beijing China 100029
11. 16847 Colven Road Granada Hills CA USA CA 91344