1. Department of Gastroenterology and Hepatology, Clinical Nutrition Unit, Sahlgrenska University Hospital, Gothenburg, Sweden;
2. Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
3. Department of Health Sciences, University West, Trollhättan, Sweden;
4. Department of Clinical Sciences/Clinical Physiology, Uppsala University, Uppsala, Sweden