1. Clinical Microbiology Laboratory, Attikon University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. Department of Microbiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
3. First Department of Propaedeutic Medicine, Laikon Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
4. Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands