At the start of 2000, widespread reports of OxyContin abuse surfaced. The results obtained from a proactive abuse surveillance program called Researched Abused, Diversion, and Addiction-Related Surveillance (RADARS) sponsored by Purdue Pharma L.P. pronounced Oxycontin and hydrocodone the most commonly abused pain medications. In 2012, New England Journal of Medicine published a study that found that "76 percent of those seeking help for heroin addiction began by abusing pharmaceutical narcotics, primarily OxyContin" and drew a direct line between Purdue's marketing of OxyContin and the subsequent heroin epidemic in the U.S.