PT - JOURNAL ARTICLE AU - Hulka, B S TI - ASPO Distinguished Achievement Award Lecture. Epidemiological studies using biological markers: issues for epidemiologists. DP - 1991 Nov 01 TA - Cancer Epidemiology Biomarkers & Prevention PG - 13--19 VI - 1 IP - 1 4099 - http://cebp.aacrjournals.org/content/1/1/13.short 4100 - http://cebp.aacrjournals.org/content/1/1/13.full SO - Cancer Epidemiol Biomarkers Prev1991 Nov 01; 1