1. Cancer in Finland in 1954–2008. Incidence, Mortality and Prevalence by Region;Hakulinen,1989
2. Multiple primary malignant tumors—a survey of the literature and a statistical study;Warren;Am J Cancer,1932
3. Trends in cancer incidence in the Nordic countries. A collaborative study of the five Nordic cancer registries;Hakulinen;Acta Pathol Microbiol Scand Sct A,1986
4. Statistical studies in the aetiology of malignant neoplasms. Vol. IV. Lung/bladder ratio;Clemmeson;Acta Pathol Microbiol Scand,1974
5. Multiple cancer—an epidemiologic exercise in Finland;Teppo;JNCI,1985