Prevalence of Hepatitis C Virus Genotypes in Mashhad, North-east Iran - Vossughinia, H; Goshayeshi, LA; Rafatpanah Bayegi, H; Sima, H; Kazemi, A; Erfani , S; Abedini, S; Goshayeshi, LE; Ghaffarzadegan, K; Nomani, H; Amel Jamehdar, S (Iranian Journal of Public Health)