1 Institute of Clinical Medicine, University of Oslo, Oslo, Norway|||Department of Gastroenterology, Oslo University Hospital, Oslo, Norway

2 Oslo Centre for Biostatistics and Epidemiology (OCBE), Oslo University Hospital, Oslo, Norway|||Department of Gastroenterology, Oslo University Hospital, Oslo, Norway

3 Research Unit of Medical Gastroenterology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark|||Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark

4 Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark

5 Section for Biostatistics and Evidence-Based Research, the Parker Institute, Frederiksberg, Denmark|||Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark

6 Landspitali University Hospital, Reykjavík, Iceland

7 Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark|||Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark

8 Department of Internal Medicine–Gastroenterology, Lillebaelt Hospital, University Hospital of Southern Denmark, Vejle, Denmark

9 Nordic Bioscience A/S, Herlev, Denmark

10 Department of Gastroenterology, University Hospital of Southern Denmark, Esbjerg Hospital, Esbjerg, Denmark

11 Jönköping Academy for Improvement in Health and Welfare, Jonkoping University, Jönköping, Sweden|||Futurum Academy of Health and Care, Jonkoping, Sweden

12 School of Health and Medical Sciences, Örebro University, Örebro, Sweden

13 Department of Biomedical and Clinical Sciences, Linköping University, Östergötland, Sweden

14 Svendborg hospital, Svendborg, Denmark|||University of Southern Denmark, Odense, Denmark

15 Institute of Regional Health Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark|||University Hospital of Southern Denmark, Viborg, Denmark

16 Institute of Health and Society, Department of Public Health, University of Oslo, Oslo, Norway|||Department of Gastroenterology, Oslo University Hospital, Oslo, Norway

17 Institute of Clinical Medicine, University of Oslo, Oslo, Norway|||Vestfold Hospital Trust, Tønsberg, Norway

18 Institute of Clinical Medicine, University of Oslo, Oslo, Norway|||Lovisenberg Diaconal Hospital, Oslo, Norway

19 Vestfold Hospital Trust, Tønsberg, Norway

20 Lovisenberg Diaconal Hospital, Oslo, Norway

21 Akershus University Hospital, Nordbyhagen, Norway

22 Department of Gastroenterology, Oslo University Hospital, Oslo, Norway

23 Department of Gastroenterology, Oslo University Hospital, Oslo, Norway|||Institute of Clinical Medicine, University of Oslo, Oslo, Norway

24 Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden

1 Portuguese Oncology Institute of Porto, Porto, Portugal

2 Hospital do Divino Espírito Santo de Ponta Delgada, EPER, Lagoa, São Miguel, Portugal

3 Hospital Prof. Dr. Fernando Fonseca, Peniche, Portugal

4 ULS Viseu Dão Lafões, Mondim da Beira, Portugal

1 BioMega Spatiotemporal Pathology Research Center, Zhuhai, China