1. Equipoise and the ethics of clinical research;Freedman;New Engl J Med,1987
2. Ethics of clinical trials;Collins,1992
3. Streptomycin treatment of pulmonary tuberculosis: a Medical Research Council investigation;Streptomycin in Tuberculosis Trials Committee;BMJ,1948
4. Implications for trials in progress of publication of positive results;Fletcher;Lancet,1993
5. Preliminary analysis of the Concorde trial;Aboulker;Lancet,1993