Affiliations

• 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.