1. Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Boston, MA, USA
2. Department of Pediatrics, Boston Children’s Hospital and Harvard Medical School, Boston, MA, USA
3. Department of Pediatrics, Children’s National Hospital, Washington, DC, USA
4. Division of Dermatology, Children’s National Hospital, Washington, DC, USA
5. Division of Diagnostic Imaging and Radiology, Children’s National Hospital, Washington, DC, USA
6. Division of Emergency Medicine, Children’s National Hospital, Washington, DC, USA
7. Division of Oncology, Children’s National Hospital, Washington, DC, USA