Identification of Hepatitis B Virus Surface Antigen (HBsAg) Genotypes and Variations in Chronic Carriers from Isfahan Province, Iran - Norouzi, M; Ghorashi, SA; Abedi, F; Nejatizadeh, A; Ataei, B; Malekzadeh, R; Alavian, SM; Judaki, MA; Ghamari, S; Namazi , A; Rahimnia, R; Khedive, A; et al. (Iranian Journal of Public Health)