OKLAHOMA CITY – A new paper from the R Street Institute, a national research group, aggressively defends e-cigarettes.Dr. Joel Nitzkin’s analysis broadly counters attacks on e-cigarettes, which have mounted in recent months. Time will tell if the study’s conclusions offset or ameliorate the impact of those attacks.Nitzkin calls the e-cigs a tool in tobacco-harm reduction and pointed criticism at some of the most often-referenced events or studies assailing the safety of “vapor” devices.Release of Nitzkin’s analysis for R Street Institute comes in the midst of discussion here in Oklahoma of e-cigarette bans in public settings, including parks. Such ordinances have...