1. Division of Rheumatology, Inflammation, and Immunity, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
2. Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany
3. Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, California, USA
4. Department of Emergency Medicine, Rhode Island Hospital and Brown University, Providence, Rhode Island, USA
5. Department of Pediatrics, Rhode Island Hospital and Brown University, Providence, Rhode Island, USA
6. Division of Emergency Medicine, A.I. Dupont Hospital for Children, Wilmington, Delaware, USA
7. Division of Emergency Medicine, Children’s Hospital of Wisconsin, Milwaukee, Wisconsin, USA
8. VA Palo Alto Health Care System, Palo Alto, California, USA
9. Division of Immunology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
10. Division of Emergency Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA