1. Methods in observational epidemiology;Kelsey,1996
2. How valid are mammography self-reports;King;Am J Public Health,1990
3. Measuring the use of mammography: two methods compared;Degman;Am J Public Health,1992
4. Are self-reported dates of mammograms accurate;Fulton-Kehoe;Public Health Rev,1993
5. Reliability of information on chronic disease risk factors collected in the Missouri behavioral risk factor surveillance system;Brownson;Epidemiology,1994