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Matched population-based prevalence study in Sweden.

We examined the yield of colonoscopy and upper endoscopy in IBS for several organic diseases. Electronic address: of irritable bowel syndrome (IBS) are common reasons for endoscopic procedures. 8 Institute of Medicine, University of Gothenburg, Gothenburg, Sweden Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, United Kingdom Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York, United States Department of Paediatrics, Örebro University Hospital, Sweden.Chan School of Public Health, Boston, MA, United States. 7 Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA, United States Departments of Epidemiology and Nutrition, Harvard T.H.6 Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA, United States Clinical Epidemiology Division, Karolinska Institutet, Stockholm, Sweden Broad Institute, Cambridge, MA, United States.5 Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.4 Broad Institute, Cambridge, MA, United States.3 Clinical Epidemiology Division, Karolinska Institutet, Stockholm, Sweden Broad Institute, Cambridge, MA, United States.Electronic address: 2 Clinical Epidemiology Division, Karolinska Institutet, Stockholm, Sweden. 1 Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA, United States.