Comment The real study is here... (Score 2) 117
The study described in the web page accessible from the login-protected link (which is not the primary source) has been published on the Journal of the American Medical Association: http://jama.jamanetwork.com/ar... (protected too, but at least is the real thing).
Here the AMA news release about the results, sufficiently informative: http://media.jamanetwork.com/n...