1. Department of Microbiology, Medical School, National and Kapodistrian University of Athens , 15772 Athens , Greece
2. Department of Microbiology, ‘Saint Savvas’ Oncology Hospital , 11522 Athens , Greece
3. Department of Orthopaedic Surgery , Geisinger Medical Center, Danville, PA 17821 , US
4. Department of Microbiology, University Hospital of Ioannina , Ioannina 45500 , Greece
5. Neonatal Intensive Care Unit, “Agios Panteleimon” General Hospital of Nikea , Piraeus 18454 , Greece
6. First Department of Orthopaedics, National and Kapodistrian University of Athens, School of Medicine , Athens 15772 , Greece
7. Laboratory of Haematology and Blood Bank Unit, “Attiko” Hospital, School of Medicine, National and Kapodistrian University of Athens , Athens 15772 , Greece
8. Department of Biomedical Sciences, Humanitas University , 20090 Pieve MI , Milan , Italy
9. IRCCS Humanitas Research Hospital , Rozzano 20089 MI, Milan , Italy