1. Department of Clinical and Biological Sciences; University of Torino; Orbassano (Torino) Italy
2. Institute of Biophysics; National Research Council of Italy (CNR); Genoa Italy
3. Pulmonary Division; Fondazione S. Maugeri; IRCCS; Veruno (Novara) Italy
4. Division of Respiratory Diseases; San Luigi Hospital; Orbassano (Torino) Italy
5. Department of Pulmonology; Leiden University Medical Centre; Leiden The Netherlands
6. Department of Respiratory Medicine; Academic Medical Center; Amsterdam The Netherlands
7. Laboratory of Stem cells and Cell therapy; Department of Experimental and Laboratory Medicine; G. Gaslini Institute; Genoa Italy