Sofosbuvir, pegylated interferon, and ribavirin for retreatment of hepatitis C virus genotype 1b following sofosbuvir and ledipasvir failure. Issue 5 (25th March 2018) - Kalal, Chetan; Shukla, Akash; Mohanka, Ravi; Vora, Mihir; Patel, Priyesh; Shah, Samir