1 Department of Pediatric Immunology, Hematology and Rheumatology, Necker Hospital, AP-HP, National Reference Centre for Rheumatic and Autoimmune Diseases in Children, RAISE, Paris, France.
2 Institut IMAGINE, Université Paris-Cité, Paris, France.
3 Department of Pediatric Nephrology, Children Hospital, University Hospital of Nancy, Lorraine University, Vandoeuvre-lès-Nancy, France.
4 Department of Rheumatology, University Children's Hospital Basel, Basel, Switzerland.