1. Copenhagen Trial Unit, Centre for Clinical Intervention Research; The Capital Region of Denmark, Rigshospitalet, Copenhagen University Hospital; Copenhagen Denmark
2. Cochrane Hepato-Biliary Group, Copenhagen Trial Unit, Centre for Clinical Intervention Research; The Capital Region of Denmark, Rigshospitalet, Copenhagen University Hospital; Copenhagen Denmark
3. Department of Regional Health Research, The Faculty of Health Sciences; University of Southern Denmark; Odense Denmark