TY  - RPRT
TI  - Case-control studies: research in reverse.
AU  - Kenneth F Schulz
AU  - David A Grimes
PY  - 2002
DO  - 10.1016/s0140-6736(02)07605-5
UR  - https://pubmed.ncbi.nlm.nih.gov/11844534/
ID  - 11844534
ER  -