1. Basic issues in population screening for cancer;Cole;J Natl Cancer Inst.,1980
2. Screening in Chronic Disease;Morrison,1992
3. Comparing new and old screening tests when a confirmatory procedure cannot be performed on all screenees. Example of automated cytometry for early detection of cervical cancer;Schatzkin;Am J Epidemiol.,1987
4. Comparison of the accuracy of two tests with a confirmatory procedure limited to positive results;Cheng;Epidemiology.,1997
5. SAS® Language,1990