1. Allergy and Respiratory Diseases, IRCCS Policlinico San Martino, University of Genoa, Genoa, Italy
2. Emergency Department, Ospedale Policlinico San Martino, Genoa, Italy
3. Respiratory Diseases, Azienda Ospedaliera Nazionale SS. Antonio e Biagio e C. Arrigo, Alessandria, Italy
4. Respiratory Diseases, Ospedale La Colletta, Arenzano, Italy
5. Personalized Medicine Clinic Asthma and Allergy, Humanitas Clinical and Research Center, Department of Biomedical Sciences, Humanitas University, Rozzano, Milan, Italy