1. The “case-control” study: Valid selection of subjects;Miettinen;J Chron Dis,1985
2. Theoretical Epidemiology. Principles of Occurrence Research in Medicine;Miettinen,1985
3. “Would” vs “should” in the definition of secondary base;Poole;J Clin Epidemiol,1990
4. Valid selection of subjects in case-control studies;Schlesselman;J Chron Dis,1985
5. Design options in epidemiologic research. An update;Miettinen;Scand J Work Environ Health,1982