1 Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden; Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. Electronic address: asa.hallqvist-everhov@ki.se.
2 Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Department of Pediatrics, Örebro University Hospital, Örebro University, Örebro, Sweden.
3 Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.
4 Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden; Department of Surgery, Linköping University, Linköping, Sweden.
5 Department of Surgery, County Council of Östergötland, Linköping, Sweden; Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
6 Department of Gastroenterology and Hepatology, Linköping University, Linköping, Sweden; Department of Health, Medicine, and Caring Sciences, Linköping University, Linköping, Sweden.
7 Department of Surgery, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.
8 Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Karolinska University Hospital, Stockholm, Sweden.
9 Karolinska University Hospital, Stockholm, Sweden.
10 Department of Internal Medicine, Södra Älvsborgs Hospital, Borås, Sweden.
11 Department of Clinical Science and Education, Södersjukhuset, Stockholm, Sweden.
12 Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Pelvic Cancer, Unit of IBD-Surgery, Karolinska University Hospital, Stockholm, Sweden.
13 Department of Medicine, Höglandssjukhuset Eksjö, Region Jönköping County Council, Jönköping, Sweden; Jönköping Academy for Improvement of Health and Welfare, Jönköping University, Jönköping, Sweden.
14 Department of Gastroenterology, Skåne University Hospital, Malmö, Sweden.
15 Department of Women's and Children's Health, Karolinska Institutet, Stockholm; Centre for Innovation, Research and Education, Region Västmanland, Västerås, Sweden.
16 Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden; Department of Gastroenterology, Sahlgrenska University Hospital, Gothenburg, Sweden.
17 Department of Gastroenterology, Sahlgrenska University Hospital, Gothenburg, Sweden.
18 Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.
19 Department of Gastroenterology, County Council of Östergötland, Linköping, Sweden.
20 Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark; Aarhus University, Aarhus, Denmark.
21 Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Department of Pediatric Gastroenterology and Nutrition, Sachs' Children and Youth Hospital, Stockholm, Sweden.