1. Division of Hepatology, Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden;
2. Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden;
3. Department of Medical and Health Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden;
4. Department of Pathology, Hôpital Beaujon, University Paris Diderot, Paris, France