1. 2006 Pipeline Insight: Breakthrough Pain.Fast Acting Players Will Capture Majority Market Share[Online].http://marketreportfinder.com/report/healthcare_pharmaceuticals_biotechnology/pharmaceuticals/pipeline_insight_breakthrough_pain_fast_acting_players_will_capture_majority_market_sharec84_83_1b.html‐order. Accessed February 7 2016.
2. Anonymous.2010.Drug Company Leader Says End Industry Support of CME. Bioethics Forum [Online].https://www.thehastingscenter.org/drug‐company‐leader‐says‐end‐industry‐support‐of‐cme/. Accessed February 20 2019.
3. Assessment of the Trends in Medical Use and Misuse of Opioid Analgesics From 2004 to 2011;Atluri Sairam;Pain Physician,2014
4. A Risk Stratification Tool to Assess Commercial Influences on Continuing Medical Education;Barnes Barbara E.;The Journal of Continuing Education in the Health Professions,2007
5. The Impact of Drug Company Funding on the Content of Continuing Medical Education;Bowman Marjorie A;The Journal of Continuing Education in the Health Professions,1986