The NEJM's take on guns has always been predictably anti-gun, and their editorial board is predictably left-wing. They are quick to publish any study that speaks against firearm ownership, no matter how poorly designed. (I believe they were the first to breathlessly publish the long-discredited Kellerman study that claimed "a gun in the home is 43 times more likely to kill a loved one than an intruder".)
Funny how they've never managed to find a pro-gun article to publish, even though there's plenty of evidence that guns save many lives a year. Laughably, they state at the end of the article that none of the authors had any conflict of interest to divulge. How about revealing the political affiliation of the authors, since the article was clearly more political than medical.
Over-educated fools, all.