1. Doctors, drug companies, and gifts;Chren;JAMA,1989
2. Teaching drug promotion abuses to health profession students;Palmisano;J Med Educ,1980
3. Attitudes of general practitioners in New Zealand to pharmaceutical representatives;Thomson;Br J Gen Pract,1994
4. Understanding financial conflict of interest;Thompson;New Engl J Med,1993
5. Beyond conflict of interest;Smith;BMJ,1998