1. Department of Clinical Microbiology, University Hospital of Heraklion, Crete, Greece.
2. Department of Pediatrics, Democritus University of Thrace Faculty of Medicine and University General District Hospital of Evros, Alexandroupolis, Thrace, Greece.
3. University of Crete Medical School, Heraklion, Greece.
4. Department of Internal Medicine, Infectious Diseases Unit, University of Crete Medical School, Heraklion, Crete, Greece.