Panthers' Charles Johnson suspended four games for drug violation
Carolina Panthers: Charles Johnson suspended for PEDs
What to look for in the 2016-17 NFL season - Los Angeles Times
Panthers news: Charles Johnson handed four-game PED suspension
Panthers DE Charles Johnson suspended four games
Charles Johnson re-signs with Panthers after being cut
Eagles, Vikings, Falcons, Panthers and Saints feature on NFL Sunday, NFL News
Carolina Panthers 53-man roster
Panthers DE Charles Johnson suspended four games for PED use - Sports Illustrated