Affiliation: | 1.Institute of Respiratory Disease, School of Medicine, University of Bari, Piazza G. Cesare 12, 70122, Bari, Italy ;2.Section of Respiratory Medicine, Hospital S Maria della Pietà, Casoria, Naples, Italy ;3.Division of Internal Medicine, University of Medicine, Bari, Italy ;4.Institute of Cardiovascular Disease, University of Medicine, Bari, Italy ;5.Division of Pulmonary, Critical Care and Sleep Medicine, University of Kentucky, Lexington, KY, 40508, USA ; |