1. Pediatrics Department, Pediatric Allergy Center, Istituto Giannina Gaslini, Genoa, Italy.
2. Health Science Department, University of Genoa, Genoa, Italy.
3. Pediatrics Department, Università la Sapienza, Rome, Italy.
4. Pediatrics Clinic, Pediatrics Department, Policlinico San Matteo, University of Pavia, Pavia, Italy.
5. Outpatients Clinics Department, Allergy Clinic, Casa di Cura Villa Montallegro, Genoa, Italy.