1. Allergy Clinic Casa di Cura Villa Montallegro Genoa Italy
2. Pediatric Clinic Fondazione IRCCS Policlinico San Matteo Pavia Italy
3. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences University of Pavia Pavia Italy
4. Allergy Center IRCCS Istituto Giannina Gaslini Genoa Italy
5. Department of Woman, Child and General and Specialized Surgery University of Campania “Luigi Vanvitelli” Naples Italy
6. Pediatric Dermatology Unit, Department of Women's and Child's Health (SDB) University of Padua Padua Italy