<qa>  What is the name of the evidence that is not caused by HCV?- Evidence or history of chronic hepatitis not caused by HCV including but not limited to non-HCV viral hepatitis, non-alcoholic steatohepatitis NASH, drug-induced hepatitis, autoimmune hepatitis. Note: Participants with history of acute non-HCV-related hepatitis, which resolved 6 months before study can be enrolled. 