1 Laboratory of Clinical Microbiology, School of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece.
2 Department of Microbiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
3 Department of Public Health, University of Naples Federico II, Naples, Italy.
4 Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne, Cologne, Germany.
5 School of Medicine, European University Cyprus, Nicosia, Cyprus.