1. Abramson, N, Meisel, A, Safar P: 1986, ‘deferred consent,’ JAMA 255, 2466–71
2. AMA: 1996, ‘Ethical use of placebo controls in clinical trials,’ www.ama-assn.org/ama/pub/ category/5494.html#a96 (Visited Aug 9, 2001)
3. Angell, M: 1984, ‘Patients’ preferences in randomized clinical trials’ New England Journal of Medicine 310, 1385–7
4. Beauchamp, T, Childress, J: 2001, Principles of Biomedical Ethics, Oxford University Press, New York
5. Brody, B: 1988, Life and Death Decision Making, Oxford University Press, New York