1. Pulmonology Department, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
2. First Department of Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. First Department of Propedeutic Internal Medicine, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. Renal Transplantation Unit, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
5. N.S. Christeas Laboratory of Experimental Surgery and Surgical Research, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
6. 1st Pulmonology Department Sismanogleio Hospital, 15126 Athens, Greece
7. Department of Thoracic Surgery, Agios Savvas Hospital, 11522 Athens, Greece
8. Department of Cytology, Mitera Hospital, 15123 Athens, Greece
9. Department of Biochemistry, Sismanogleio Hospital, Athens 15126, Greece
10. Laboratory of Clinical Virology, School of Medicine, University of Crete, 71003 Heraklion, Greece