(August 21, 2019, 10:54 AM EDT) -- CLEVELAND — The Ohio federal judge presiding over the opioid multidistrict litigation on Aug. 19 appointed interim counsel for a city/county negotiating class (In Re: National Prescription Opiate Litigation [Summit, Ohio, et al. v. Purdue Pharma L.P., et al., No. 18-op-450090, N.D. Ohio, Eastern Div.)...