1. Division of Rheumatology, Children’s National Hospital, Washington, DC, USA
2. Division of Nephrology, Children’s National Hospital, Washington, DC, USA
3. Department of Pediatrics, Children’s National Hospital, Washington, DC, USA
4. Division of Neurology, Children’s National Hospital, Washington, DC, USA
5. Department of Hematology/Oncology, Children’s National Hospital, Washington, DC, USA
6. Department of Neuroradiology, Children’s National Hospital, Washington, DC, USA
7. Department of Radiology, Children’s National Hospital, Washington, DC, USA