1. Department of Clinical Pharmacology, Athens Medical Center, Athens, Greece.
2. Directorate of Research, Studies and Documentation, National Public Health Organization, Athens, Greece.
3. Department of Pharmacy, Alexandra General Hospital, Athens, Greece.
4. Department of Pharmacy, European Interbalkan Medical Center, Thessaloniki, Greece.
5. Department of Pharmacy, Peristeri Medical Center, Athens, Greece.
6. Department of Pharmacy, Paleo Faliro Medical Center, Athens, Greece.
7. Department of Pharmacy, Athens Medical Center, Athens, Greece.
8. Department of Biopathology, and Athens Medical Center, Athens, Greece.
9. Department of Clinical Infectious Diseases, Athens Medical Center, Athens, Greece.
10. Department of Hygiene, Epidemiology and Medical Statistics, Faculty of Medicine, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece.
11. Department of Microbiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.