1. Allergy Center, Istituto Giannina Gaslini, Genoa, Italy
2. Pediatrics Clinic, Pediatrics Department, Policlinico San Matteo, University of Pavia, Pavia, Italy
3. Allergy Clinic, Casa di Cura Villa Montallegro, Genoa, Italy
4. ControL’Asma” Study Group
5. PControL’Asma” Study Group