1. The PEW Charitable Trusts. Persuading the Prescribers: Pharmaceutical Industry Marketing and its Influence on Physicians and Patients. 2013. Accessed from http://www.pewtrusts.org/en/research-and-analysis/fact-sheets/2013/11/11/persuading-the-prescribers-pharmaceutical-industry-marketing-and-its-influence-on-physicians-and-patients.
2. Are drugs too expensive in Canada? Yes;J Lexchin;Can Fam Physician,2006
3. The cost of pushing pills: a new estimate of pharmaceutical promotion expenditures in the United States;MA Gagnon;PLoS Med,2008
4. Code on Interactions with Healthcare Professionals [http://www.phrma.org/code_on_interactions_with_healthcare_professionals]
5. Do doctors rely on pharmaceutical industry funding to attend conferences and do they perceive that this creates a bias in their drug selection? Results from a questionnaire survey;P Rutledge;Pharmacoepidemiol Drug Saf,2003