1. Department of Medicine, OUH Svendborg, Sygehus, Denmark
2. Department of Clinical Research, University, of Southern Denmark (SDU), Denmark
3. Department of Social Medicine & Public Health, Pomeranian Medical University, Poland
4. Surgical Research Unit, Odense University Hospital, Svendborg, Denmark
5. Department of Gastroenterology, Skåne University Hospital, Malmö, Lund University, Sweden