1. Department of Surgery I, Kommunehospitalet, Denmark
2. Department of Surgery C, Rigshospitalet, Denmark
3. Department of Surgery D, Glostrup Hospital, Copenhagen, Denmark
4. Department of Surgery A, Odense Sygehas, Odense C, Denmark
5. Department of Surgery A, Ålborg Hospital Afsnit Syd, Ålborg, Denmark
6. Department of Gastrointestinal Surgery, Hvidovre Hospital, Hvidovre, Denmark
7. Department of Surgery L, Århus Kommunehospital, Århus, Denmark