<qa>  How long will the treatment period for patients with chronic hepatitis C infectedSixty patients with chronic hepatitis C infected with HCV genotype 2 or 3 will be treated using the combination of either low- or standard dose peginterferon and ribavirin for 24 weeks, with re-treatment using the standard doses and a longer duration 48 weeks for those who do not respond to or relapse after initial low dose therapy. 