1 Department of Surgery, Linköping University Hospital and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden. par.myrelid@liu.se
2 Department of Gastroenterology and Hepatology, Linköping University Hospital and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
3 Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden