 d Experimental design and methods: d.1. Pilot study design The study will be conducted at two sites: the STI clinic at Instituto Dermatologico and Cirugia de Piel IDCP in Santo Domingo and the Clínica de Familia in La Romana, Dominican Republic. These sites have been selected on the basis of: 1 high numbers of male clients at risk for HIV and STI infection in communities served by the clinics; 2 high level of acceptability of MC among men in the communities served by the clinics bateyes of Altagracia; 3 the availability of service providers willing to be trained; 4 the availability of equipment; and 5 the availability of infrastructure, including a minor surgical theater, sterilization facilities and HIV voluntary counseling and testing VCT and STI management. 