1. Second Pulmonary Department, Attikon University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. Seventh Pulmonary Department, Sotiria Hospital for Chest Diseases, Athens, Greece
3. First Department of Respiratory Diseases, Sotiria Hospital for Chest Diseases, Medical School, National and Kapodistrian University of Athens, Athens, Greece
4. Sixth Pulmonary Department, Sotiria Hospital for Chest Diseases, Athens, Greece
5. Genomics and Proteomics Research Units, Center of Basic Research II, Biomedical Research Foundation, Academy of Athens, Athens, Greece