Mealey's (September 21, 2020, 2:03 PM EDT) -- PORTLAND, Maine — An expert need not have personal knowledge of a man's alleged asbestos exposures to render a causation opinion, the testimony that cumulative exposures increase the risk of disease is not unreliable, there is no evidence that the expert dismissed differences in types of asbestos fibers, and a second expert may testify regarding state-of-the-art, a federal judge in Maine said Sept. 16 (Victor Coffin, et al. v. Ametek Inc., et al., No. 18-472, D. Maine, 2020 U.S. Dist. LEXIS 169589)....