1. Medical School, University of Cyprus, Nicosia, Cyprus
2. Department of Health Sciences, School of Sciences, European University of Cyprus, Nicosia, Cyprus
3. Transmission Reduction Intervention Project, Athens, Greece
4. Pediatric Research Laboratory, Faculty of Nursing, National and Kapodistrian University of Athens, Athens, Greece
5. Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
6. Departments of Medicine and Public Health Sciences, University of Chicago Medical Center, Center for AIDS Elimination, Chicago, Illinois, USA
7. Healthcare Management Postgraduate Program, Open University of Cyprus, Nicosia, Cyprus
8. Department of Population Health, NYU Medical School, New York City, New York, USA
9. National Development and Research Institutes, New York City, New York, USA