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Scandinavian Journal of Gastroenterology Volume 55, 2020 - Issue 4
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Original Article

The use of ICD codes to identify IBD subtypes and phenotypes of the Montreal classification in the Swedish National Patient Register

Sarita ShresthaSchool of Medical Sciences, Örebro University, Örebro, Sweden; View further author information
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Ola OlénDepartment of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden; ;Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; ;Department of Pediatric Gastroenterology and Nutrition, Sachs’ Children and Youth Hospital, Stockholm, Sweden; View further author information
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Carl ErikssonClinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; ;Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden; ORCID Iconhttp://orcid.org/0000-0002-1046-383XView further author information
ORCID Icon,
Åsa H. EverhovDepartment of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden; ;Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; View further author information
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Pär MyrelidDivision of Surgery, Department of Clinical and Experimental Medicine, Faulty of Health Sciences, Linköping University; ;Department of Surgery, County Council of Östergötland Linköping, Linköping, Sweden; ORCID Iconhttp://orcid.org/0000-0001-7518-9213View further author information
ORCID Icon,
Isabella VisuriDepartment of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden; View further author information
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Jonas F. LudvigssonDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; ;Department of Pediatrics, Örebro University Hospital, Örebro University, Örebro, Sweden; ;Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK; ;Department of Medicine, Celiac Disease Center, Columbia University College of Physicians and Surgeons, New York, NY, USA; View further author information
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Ida SchoultzSchool of Medical Sciences, Örebro University, Örebro, Sweden; View further author information
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Scott MontgomeryClinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; ;Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, Örebro, Sweden; ;Department of Epidemiology and Public Health, University College London, London, UKView further author information
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Michael C. SachsClinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; View further author information
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Jonas HalfvarsonDepartment of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden; Correspondence[email protected]
View further author information
, The SWIBREG Study Group,
Malin OlssonDepartment of Surgery, County Council of Östergötland, Linköping, Sweden; View further author information
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Henrik HjortswangDepartment of Gastroenterology and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden; View further author information
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Jonas BengtssonDepartment of Surgery, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden; View further author information
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Hans StridDepartment of Internal Medicine, Södra Älvsborgs Hospital, Borås, Sweden; View further author information
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Marie AnderssonDepartment of Internal Medicine, Södra Älvsborgs Hospital, Borås, Sweden; View further author information
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Susanna JäghultStockholm Gastro Center, Karolinska Institutet, Stockholm, Sweden; View further author information
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Michael EberhardsonDepartment of Medicine, Karolinska Institutet, Stockholm, Sweden; View further author information
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Caroline NordenvallDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; ;Department of Colorectal Cancer, Karolinska University Hospital, Stockholm, Sweden; View further author information
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Jan BjörkUnit of Internal Medicine, Institute Medicine Solna, Karolinska Institutet, Stockholm, Sweden; ;Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; View further author information
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Ulrika L. FagerbergCenter for Clinical Research, Västmanland Hospital, Västerås, Sweden and Uppsala University, Uppsala, Sweden; ;Department of Pediatrics, Västmanland Hospital, Västerås, Sweden; ;Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden; View further author information
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Martin RejlerDepartment of Medicine, Region Jönköping County Council, Jönköping, Sweden; ;Jönköping Academy for Improvement of Health and Welfare, Jönköping University, Jönköping, Sweden; View further author information
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Olof GripDepartment of Gastroenterology, Skåne University Hospital, Malmö, Sweden; View further author information
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Pontus KarlingDepartment of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden; View further author information
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Mattias BlockDepartment of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, SSORG - Scandinavian Surgical Outcomes Research Group, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden; View further author information
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Eva AngeneteDepartment of Surgery, SSORG - Scandinavian Surgical Outcomes Research Group, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; ;Department of Surgery, Region Västra Götaland, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden; View further author information
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Per M. HellströmDepartment of Gastroenterology, Skåne University Hospital, Malmö, Sweden; View further author information
&
Anders GustavssonDepartment of Internal Medicine, Central Hospital, Karlstad, Sweden; ;Department of Medical Sciences, Uppsala University, Uppsala, SwedenView further author information
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Pages 430-435 | Received 23 Dec 2019, Accepted 05 Mar 2020, Published online: 06 May 2020

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