Institution: | 1. Allergy Unit, Hospital Universitario Fundacion, , Alcorcón, Madrid, Spain;2. Medicine and Surgery Department, Universidad Rey Juan Carlos, , Alcorcon, Madrid, Spain;3. Preventive Medicine and Public Health Department, Universidad Rey Juan Carlos, , Alcorcón, Madrid, Spain;4. Primary Care Health Center Gregorio Mara?ón, Autonomous Community of Madrid, , Alcorcón, Madrid, Spain;5. Primary Health Center, Granero Vicedo Alcorcón, Autonomous Community of Madrid, , Alcorcón, Madrid, Spain |