Iman Naimi1, Andrea J Apter2, Kenneth Ginsburg3, David R Naimi4. 1. St George's University School of Medicine, Grenada, West Indies. 2. Pulmonary, Allergy & Critical Care Division, University of Pennsylvania, Philadelphia, Pa. 3. Craig-Dalsimer Division of Adolescent Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pa. 4. Northwest Asthma & Allergy Center and University of Washington, Seattle, Wash. Electronic address: dnaimi@nwasthma.com.