Link to cited paper "Compliance with mandatory reporting of clinical trial results on ClinicalTrials.gov: cross sectional study"<p>"Conclusion: Most trials subject to mandatory reporting did not report results within a year of completion."<p><a href="http://www.bmj.com/content/344/bmj.d737a3" rel="nofollow">http://www.bmj.com/content/344/bmj.d737a3</a>