Affiliation: | 1. National Medical Center (Siglo XXI), Cardiology Hospital, IMSS, Mexico City, Mexico;2. Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL, USA;3. Division of Internal Medicine, University of Alabama at Birmingham, Birmingham, AL, USA;4. Asthma and Allergy Center, Lewisville and Flower Mound, TX, USA;5. Division of Allergy and Immunology, University of Texas Southwestern Medical Center, Dallas, TX, USA;6. Allergy and Asthma Center, McLean, VA, USA;7. National Medical Center (Siglo XXI), Specialties Hospital (Dr. Bernardo Sepulveda), IMSS, Mexico City, Mexico |