Affiliation: | 1. Department of Pediatrics and Internal Medicine, Division of Allergy and Immunology, University of Texas Southwestern Medical Center in Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390-9063, USA;2. Department of Pathology and Laboratory Medicine, 675 Charles Young Drive South, Room 4-736, Macdonald Research Laboratories, University of California Los Angeles School of Medicine, Los Angeles, CA 90095-1732, USA |