1. Defacto long-term opioid therapy for noncancer pain;Von Korff;Clinical Journal of Pain,2008
2. Pain and function among patients using chronic opioid therapy (COT) for chronic non-cancer pain: age and gender differences;LeResche;International Association for the Study of Pain,2012
3. Trends in long-term opioid therapy for chronic non-cancer pain;Boudreau;Pharmacoepidemiology and Drug Safety,2009
4. Clinical guidelines for the use of chronic opioid therapy in chronic noncancer pain;Chou;Journal of Pain,2009
5. Primary care monitoring of long-term opioid therapy among veterans with chronic pain;Krebs;Pain Medicine,2011