 Assessment of HIV status: An HIV test will be offered to all men enrolled in the study and performed taking into account the individual persons wish to be tested and informed about their HIV status. HIV antibody presence in whole blood samples will be assessed following the WHO approved HIV serial testing algorithm. Initially, the Bioline HIV-12 immunodetection is used, and is subsequently followed by Determine HIV-12 test in order to confirm Bioline potentially positive results. 