[1] Univ Genoa, IRCCS AOU San Martino, Allergy & Resp Dis Clin, Genoa, Italy
[2] Univ Hosp SanMartino, Emergency Dept, Genoa, Italy
[3] Italian Natl Hlth Syst Local Hlth Unit N3 Gen, Genoa, Italy
[4] Univ Porto, Fac Med, Dept Immunol, Oporto, Portugal
[5] Univ Hosp S Martino, Econ Hlth Consultant, Genoa, Italy
[6] Natl Inst Canc Res, Epidemiol Biostatist & Clin trials, Genoa, Italy
[7] CNR, Ist Fisiol Clin, Pisa, Italy
[8] Univ Pisa, Dipartimento Cardiotorac & Vasc, Sez Fisiopatol Resp, Pisa, Italy
[9] ASL La Spezia, UO Pneumol, La Spezia, Italy
[10] Univ Foggia, Clin Malattie Resp, Foggia, Italy
[11] Fdn Maugeri, Pavia, Italy
[12] UO Fisiopatol Resp, Sesto San Giovanni, Italy
[13] CNR, Ist Neurobiol & Med Mol, Rome, Italy
[14] Ist Super Sanita, Rome, Italy
[15] Serv Sanit Reg, Dipartimento Epidemiol, Rome, Regione Lazio, Italy
[16] Univ Cattolica Sacro Cuore, Complesso Integrato Columbus, Rome, Italy
[17] Soc Italiana Farm Osped, Rome, Italy
[18] Azienda Sanit SIFO, Serv Farmaceut, Rome, Italy
[19] Univ Perugia, Dipartimento Med Clin & Sperimentale, Sez Med Interna & Sci Oncol, Perugia, Italy
[20] Azienda Osped Univ Osped Riuniti Ancona, Serv Allergol, Ancona, Italy
[21] Seconda Univ Napoli, Dipartimento Med Sperimentale, Sez Farmacol, Naples, Italy
[22] Univ Genoa, Dipartimento Med Interna & Specialita Med, Clin Tisiol & Pneumol, Genoa, Italy
[23] Univ Pavia, Dipartimento Sci Ematol Pneumol Cardiovasc Med &, Sez Fisiopatol Resp, Pavia, Italy