1. Microbiology Department, Papanikolaou General Hospital, Thessaloniki, Greece
2. Microbiology Department, Agios Pavlos General Hospital, Thessaloniki, Greece
3. Infectious Disease Unit, Papanikolaou General Hospital, Thessaloniki, Greece
4. Department of Microbiology, Medical Faculty, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece