1. 3rd Department of Medicine, National and Kapodistrian University of Athens, Sotiria Chest Diseases Hospital, 11527 Athens, Greece
2. Department of Pathology, Sotiria Chest Diseases Hospital, 11527 Athens, Greece
3. Department of Oncology, Iatriko Kentro Athinon Marousi, 15125 Athens, Greece
4. Endocrine Unit, 2nd Propaedeutic Department of Internal Medicine, Research Institute and Diabetes Center, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, 12461 Athens, Greece
5. 3rd Department of Internal Medicine, Sotiria General Hospital, 11527 Athens, Greece