1. Clinical Allergy and Immunology Unit, Foundation Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena, IRCCS, Milan, Italy
2. Unit of Laboratory Medicine, Niguarda Ca’ Granda Hospital, Milan, Italy
3. Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche (DiSTAM), Università degli Studi di Milano, Milan, Italy
4. National Research Council, ISPA, Turin, Italy
5. Unit of Allergology and Immunology, Niguarda Ca’ Granda Hospital, Milan, Italy