1 Unit of Pediatric Rheumatology, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden. Karin.Palmblad@ki.se.
2 Unit of Pediatric Rheumatology, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden. hanna.schierbeck@igp.uu.se.
3 Unit of Pediatric Rheumatology, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden.
4 Rheumatology Unit, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden.
5 Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden.
6 Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK.