Agree. my understanding is that Viekira Pak can cause serious liver injury MOSTLY in patients with underlying advanced liver disease. SOME of the cases occurred in patients for whom these medicines were contraindicated or not recommended Harvoni is now looking safer, and what are the VP advantages over it? SO my concern is if no treating doctor will ever want to give it unless perhaps the virus is resistant to Harvoni or there's some other special reason not to give Harvoni. I need to think about this before make an investment in ENTA.