TY  - RPRT
TI  - Bias in case-control studies.
AU  - H T Davies
AU  - I K Crombie
PY  - 2000
DO  - 10.12968/hosp.2000.61.4.1875
UR  - https://pubmed.ncbi.nlm.nih.gov/10858807/
ID  - 10858807
ER  -