TY  - RPRT
TI  - On choosing the control group in case-control studies.
AU  - A R Feinstein
AU  - R I Horwitz
PY  - 1983
DO  - 10.1016/0021-9681(83)90115-7
UR  - https://pubmed.ncbi.nlm.nih.gov/6833449/
ID  - 6833449
ER  -