TY  - RPRT
TI  - Exposure opportunity in epidemiologic studies.
AU  - J J Schlesselman
AU  - B V Stadel
PY  - 1987
DO  - 10.1093/oxfordjournals.aje.a114517
UR  - https://pubmed.ncbi.nlm.nih.gov/3812426/
ID  - 3812426
ER  -