1 Kaiser Permanente Orange County, Irvine, Calif; Division of Allergy and Immunology, Rady Children's Hospital, San Diego, Calif. Electronic address: akilahjefferson@gmail.com.
2 Division of Allergy & Immunology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas.
3 Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth, Hanover, NH.