1 Section of Emergency Medicine, Department of Pediatrics, Children's Hospital Colorado, University of Colorado, Aurora, Colo. Electronic address: [email protected].
2 Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany; MASK-air, Montpellier, France.