1. Department of Gastroenterology, North Zealand University Hospital, Frederikssund, Denmark
2. Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
3. Unit of Biostatistics, Institute of Environmental Medicine, Stockholm, Sweden
4. Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
5. Department Medical Epidemiology and Biostatistics, Stockholm, Sweden
6. Department of Pediatrics, Örebro University Hospital, Örebro, Sweden
7. Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
8. Clinical Epidemiology Unit, Department of Medicine Solna, Stockholm, Sweden
9. Department of Pediatric gastroenterology and nutrition, Sachs’ Children and Youth Hospital, Stockholm, Sweden
10. Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden