1. Principles of Biomedical Ethics;Beauchamp,1949
2. Ethics and Regulation of Clinical Research;The Nuremberg Code,1949
3. Ethical Principle and Guidelines for the Protection of Research U.S Government Printing Office, Washington DC;Belmont Report,1979
4. International Ethical Guidelines for Biomedical Research Involving Human Subject CIOMS/ WHO, Geneva;Council for International Organization of Medical Sciences,1993