Figure 1From: Frequency distribution of hepatitis C virus genotypes in different geographical regions of Pakistan and their possible routes of transmission Study enrollment of patients. For study enrollments the patients were required to have chronic HCV with positive anti-HCV ELISA. The patients were also required to have detectable HCV RNA by qualitative RT-PCR and viral load >500 IU/ml and belonged to any of the four provinces of PakistanBack to article page