1. Allergy Center, IRCCS Istituto Giannina Gaslini, Genoa, Italy
2. Clinical Microbiology and Microbiome Laboratory, Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
3. UOC Laboratory of Clinical Medicine, IRCCS Multimedica Hospital, Milan, Italy
4. Department of Pharmacy, University of Napoli Federico II, Naples, Italy
5. International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
6. Department of Maternal Infantile and Urological Science, Sapienza University of Rome, Rome, Italy
7. Primary Care Paediatrics, ASL Caserta, Caserta, Italy
8. Department of Woman, Child and General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Naples, Italy
9. Pediatric Clinic, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
10. Department of Otolaryngology, University of Molise, Campobasso, Italy
11. Allergy Clinic, Casa di Cura Villa Montallegro, Genoa, Italy