Male circumcision and prevalence of genital human papillomavirus infection in men: a multinational study oleh Albero Ginesa, Villa Luisa L, Lazcano-Ponce Eduardo, Fulp William, Papenfuss Mary R, Nyitray Alan G, Lu Beibei, Castellsagué Xavier, Abrahamsen Martha, Smith Danélle, Bosch F Xavier, Salmerón Jorge, Quiterio Manuel, Giuliano Anna R