1. Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
2. Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
3. Inmunotek SL Laboratories, 28805 Madrid, Spain
4. Allergen Immunotherapy Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain