1Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden;
2Department of Paediatrics, Örebro University Hospital, Örebro, Sweden;
3Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK;
4Columbia University, New York, New York, USA;
5Patient Area Gastroenterology, Dermatovenerology and Rheumatology, Inflammation and Infection Theme Karolinska University Hospital, Stockholm, Sweden;
6Unit of Internal Medicine, Institute Medicine Solna, Karolinska Institutet, Stockholm, Sweden;
7Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden;
8Department of Surgical Sciences, Uppsala University, Uppsala, Sweden;
9Clinical Epidemiology Unit, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden;
10Department of Pediatric Gastroenterology and Nutrition, Sachs' Children and Youth Hospital, Stockholm, Sweden;
11Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.
Correspondence: Jonas F. Ludvigsson. Email: [email protected].
