1. Protecting the “animal of necessity”: limits to inquiry in clinical investigation;Swazey;Daedulus,1978
2. Ethics and clinical research;Beecher;New Engl. J. Med.,1966
3. Human Guinea Pigs;Papworth,1967
4. Experimentation with Human Subjects,1972
5. Racism and research: the case of the Tuskegee syphilis study;Brandt;Hastings Cent. Rep.,1978