TY  - RPRT
TI  - A method for detecting a cohort exposure.
AU  - S T Sacks
AU  - S Selvin
PY  - 1981
DO  - 10.1016/0013-9351(81)90088-8
UR  - https://pubmed.ncbi.nlm.nih.gov/7238463/
ID  - 7238463
ER  -