1 Department of Allergy and Immunology, Walter Reed National Military Medical Center, Bethesda, Maryland. Electronic address: christopher.v.macomb.mil@health.mil.
2 Department of Allergy and Immunology, William Beaumont Army Medical Center, El Paso, Texas.
3 Division of Asthma, Allergy & Clinical Immunology, University of Virginia, Charlottesville, Virginia.
4 Department of Allergy and Immunology, Walter Reed National Military Medical Center, Bethesda, Maryland.