1. Department of Microbiology, ‘Aretaieion’ General Hospital, National and Kapodistrian University of Athens, Athens 11528, Greece
2. Department of Pathology and Physiology, ‘Laikon’ General Hospital, National and Kapodistrian University of Athens, Athens 11527, Greece
3. The Fifth Orthopedic Clinic of Hospital for Accidents and Rehabilitation of Injured and Disabled People General Hospital, Athens 14561, Greece
4. Second Department of Internal Medicine, Division of Hematology, ‘ATTIKO’ University Hospital, National and Kapodistrian University of Athens, Athens 12462, Greece
5. Laboratory of Microbiology, ‘Laikon’ General Hospital, National and Kapodistrian University of Athens, Athens 11527, Greece
6. General Hospital of Athens, ‘Spiliopoulio’, Athens 11521, Greece
7. Second Department of Pathology, University General Hospital ‘ATTIKON’, School of Medicine, National and Kapodistrian University of Athens, Athens 12462, Greece