1. General Practitioners. Oral contraceptives and health;of, Royal College,1974
2. Extenisions of analytic methods for nested and population-based incident case-control studies;Lubin, J.H.;J Chronnic Dis,1986
3. Siatistical methods in cancer research. Vol 1. The analysis of case-control studies;Breslow, N.E.; Day, N.E.
4. Population Censuses and Surveys. General household survev;Office of,1982
5. Mortality in relation to smoking: 22 vears observations on female British doctors;Doll, R.; Gray, R.; Hafner, B.; Peto, R.;Br Medj,1980