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BMJ (Clinical Research Ed.)|September 14, 1996
Clinical effects of anticoagulant therapy in suspected acute myocardial infarction: systematic overview of randomised trialsR Collins, S MacMahon, M Flather, et al.
British Journal of Cancer|December 1, 1970
The effect of the age of mice on the incidence of skin cancerP N Lee, R Peto
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