1. US Department of Health and Human Services. Elements of Informed Consent. In: US Department of Health and Human Services, (ed.). 21 CFR §50, CFR §46.
2. The Belmont Report: Ethical Principles and Guidelines for the Protection of Human Subjects of Research;National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research,1979
3. US Department of Health and Human Services. The Federal Policy for the Protection of Human Subjects.
4. Interventions to improve research participants' understanding in informed consent for research: a systematic review;Flory;J. Am. Med. Assoc.,2004
5. Improving understanding of the informed consent process and document;Meade;Semin. Oncol. Nurs.,1999