Rodrigues L, Kirkwood BR (1990). "Case–control designs in the study of common diseases: updates on the demise of the rare disease assumption and the choice of sampling scheme for controls". Int. J. Epidemiol. 19 (1): 205–13. doi:10.1093/ije/19.1.205. PMID2190942.
Rodrigues L, Kirkwood BR (1990). "Case–control designs in the study of common diseases: updates on the demise of the rare disease assumption and the choice of sampling scheme for controls". Int. J. Epidemiol. 19 (1): 205–13. doi:10.1093/ije/19.1.205. PMID2190942.