Institution: | 1. Faculty of Medicine and Health, Örebro University, Örebro, Sweden;3. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden;4. University Health Care Research Center, Örebro University Hospital, Örebro, Sweden;6. Clinical Epidemiology Division, Department of Medicine, Karolinska Institutet, Stockholm, Sweden;5. Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden;7. Department of Pediatrics, Örebro University Hospital, Örebro, Sweden;12. Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg, Sweden;8. Department of Pediatric Gastroenterology, Queen Silvia Children’s Hospital, Gothenburg, Sweden |