References
- World Medical Association. Declaration of Helsinki. Recommendations guiding physicians in biomedical research involving human subjects. Helsinki 1964, (latest revision, Hong Kong, 1989)
- Levine R J. Ethics and Regulation of Clinical Research (second ed). Yale University Press, New Haven, London 1988
- The Council for International Organizations of Medical Sciences (CIOMS) in collaboration with the World Health Organization (WHO). International Ethical Guidelines for Biomedical Research involving Human Subjects. CIOMS, Geneva 1993