Cameroon. Yaounde. Mokolo market. PSI ( Population Services International) is a Non Government Organisation) (NGO) which has one main program in Cameroon: the PMSC (Programm Marketing Social Cameroon). Peers educators visit markets and perform sketches on HIV Aids sensibilisation. Wooden phallus to show how to use and wear properly a condom. Safe sex. © 2001 Didier Ruef