TY  - RPRT
TI  - Estimation of exposure-specific rates from sparse case-control data.
AU  - S Greenland
PY  - 1987
DO  - 10.1016/0021-9681(87)90075-0
UR  - https://pubmed.ncbi.nlm.nih.gov/3680466/
ID  - 3680466
ER  -