1. The Placebo Effect;Brown;Scientific American,1998
2. Assessing the efficacy and safety of medical technologies;United States Congress, Office of Technology Assessment,1978
3. The impact of randomized clinical trials on health policy and medical practice: background paper;Gelband,1983
4. Evidence-based medicine;White;Lancet,1995
5. An enquiry into the drug bill;Forsyth;Medical Care,1963