And from where? Harvard!
http://www.beliefnet.com/news/articles/harvard-university-study-reveals-astonishing-link.aspx
“There is a compound assertion that guns are uniquely available in the United States compared with other modern developed nations, which is why the United States has by far the highest murder rate,” report Kates and Mauser. “Though these assertions have been endlessly repeated," the statement “is, in fact, false.”
http://www.beliefnet.com/news/articles/harvard-university-study-reveals-astonishing-link.aspx