1 Department of Allergy, Immunology, and Rheumatology, Stanford University, Stanford, Calif; Department of Allergy and Immunology, Lucille Packard Children's Hospital, Palo Alto, Calif. Electronic address: michelle.f.huffaker@gmail.com.
2 Department of Allergy, Immunology, and Rheumatology, Stanford University, Stanford, Calif; Department of Allergy and Immunology, Lucille Packard Children's Hospital, Palo Alto, Calif.