NASHVILLE, Tenn. - A Tennessee federal judge, on the recommendation of a magistrate judge, on Sept. 13 declined to exclude expert opinion testimony for prison officials accused of violating the civil rights of a class of prisoners with hepatitis C (Charles Graham, et al. v. Tony C. Parker, et al., No. 3:16-cv-1954, M.D. Tenn., 2018 U.S. Dist. LEXIS 156296).