1Section of Nutrition and Dietetics, Division of Medicine, Department of Clinical Service, Oslo University Hospital, Oslo, Norway
2Institute of Clinical Medicine, University of Oslo, Oslo, Norway
3Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
4Department of Gastroenterology, Oslo University Hospital, Oslo, Norway
5Unger-Vetlesen Institute, Lovisenberg Diaconal Hospital, Oslo, Norway
6Nofima-Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway
© The Author(s) 2020
Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit (http://creativecommons.org/licenses/by/4.0/).
