Institution: | 1. Department of Epidemiology, Institute of Public Health, Tirana, Albania;2. Maternity Hospital, Durres, Albania;3. Laboratory of Virology, Regina Elena Cancer Institute, Rome, Italy;4. Oncological Hospital, University Hospital Center “Mother Teresa”, Tirana, Albania;5. Department of Virology, Institute of Public Health, Tirana, Albania;6. Department of Biochemical Science, “La Sapienza” Rome University, Rome, Italy |