1 | Second Department of Propedeutic Surgery, National and Kapodistrian University of Athens Medical School, “Laiko” General Hospital, Athens, Greece |
2 | Respiratory Intensive Care Unit, Athens Chest Hospital “Sotiria”, Athens, Greece |
3 | Department of Pathophysiology, National and Kapodistrian University of Athens Medical School, “Laiko” General Hospital, Athens, Greece |
4 | Respiratory Department, “Laiko” General Hospital, Athens, Greece |