TY  - RPRT
TI  - A matching procedure for epidemiological studies.
AU  - K Detre
AU  - G Wyshak
PY  - 1971
DO  - 10.1016/0021-9681(71)90102-0
UR  - https://pubmed.ncbi.nlm.nih.gov/5094231/
ID  - 5094231
ER  -