1. Department of Public Health and Pediatrics, Microbiology and Virology Unit University Hospital Città della Salute e della Scienza di Torino Turin Italy
2. Department of Internal Medicine 4, Hospital de Santa Marta Central Lisbon Hospital Center Lisbon Portugal
3. NOVA Medical School Universidade Nova de Lisboa Lisbon Portugal
4. Medical School University of Cyprus Nicosia Cyprus
5. Department of Medicine Nicosia General Hospital Aglandjia Cyprus
6. Department of Microbiology Nicosia General Hospital Aglandjia Cyprus