1. Section of Pediatric Rheumatology, University of Chicago Medical Center, Chicago, IL, USA
2. Department B/Pediatric Rheumatology, Edmond and Lily Safra Children’s Hospital, Chaim Sheba Medical Center, Tel Hashomer, Israel
3. Sections of Rheumatology and Pediatric Rheumatology, Departments of Internal Medicine and Pediatrics, University of Chicago Medical Center, Chicago, IL, USA
4. Division of Pediatric Rheumatology, Hospital for Special Surgery, New York, NY, USA
5. Pediatric Rheumatology Clinic, C. S. Mott Children’s Hospital, Ann Arbor, MI, USA