1. Psychosocial Department and
2. Department of Pediatric Hematology Immunology & Infectious Disease, Academic Medical Center, Emma Children’s Hospital, Amsterdam, Netherlands;
3. Department of Pediatric Rheumatology, Reade (Jan van Breemen location), Amsterdam, Netherlands;
4. Department of Pediatrics, Sint Lucas Andreas Hospital, Amsterdam, Netherlands; and
5. Department of Pediatric Rheumatology, VU University Medical Centre, Amsterdam, Netherlands