1. From the Division of Pediatric Infectious Diseases and Immunology, Department of Pediatric, Infectious and Immunologic Diseases Research Center, Cedars-Sinai Medical Center, Los Angeles, CA (Y.L., D.W., J.D., K.S., S.C., G.H., T.R.C., M.A.); Department of Rheumatology, Pediatric Rheumatology, Hospital for Special Surgery and Weill Medical College of Cornell University, New York, NY (T.J.A.L.); Department of Pathology, David Geffen School of Medicine at UCLA (M.C.F.); and Department of Pediatrics,...