(September 8, 2015, 12:08 PM EDT) -- COLUMBUS, Ohio — The federal judge in Ohio presiding over the perfluorooctanoic acid (known as C8) personal injury litigation brought against E.I. du Pont de Nemours & Co. on Sept. 4 ruled that a plaintiff could introduce at trial evidence that the company worked with a consulting group on its defense of the claims, but he said that the jury could disregard that evidence (In Re: E.I. DuPont de Nemours & Company C-8 Personal Injury Litigation, relating to Bartlett v. E.I. DuPont de Nemours & Co., No. 13-0170, MDL 13-2433, S.D. Ohio; 2015 U.S. Dist. LEXIS 118575)....