[1] ISTUD Fdn, Healthcare Area, Milan, Italy
[2] Univ Cattolica Sacro Cuore, Dept Psychol, Milan, Italy
[3] IRCCS Fdn Don Carlo Gnocchi, Heart Resp Rehabil Unit, Milan, Italy
[4] Univ Milan, Dept Hlth Sci, Resp Unit, ASST Santi Paolo & Carlo, Milan, Italy
[5] Assoc ONLUS BPCO, Rome, Italy
[6] Local Hlth Dept 3 Serenissima, Venice, Italy
[7] Federasma & Allergie Federaz Italiana Pazienti Od, Prato, Italy
[8] Italian Coll Gen Practitioners, Bari, Italy
[9] Chiesi Farmaceut SpA, Parma, Italy
[10] Rehabil Clin Monsignor Calaciura Biancavilla, Catania, Italy
[11] Local Hlth Dept Romagna Pulmonol Ravenna, Ravenna, Italy
[12] Local Hlth Dept Bari, Bari, Italy