TY  - RPRT
TI  - Causal knowledge as a prerequisite for confounding evaluation: an application to birth defects epidemiology.
AU  - Miguel A Hernán
AU  - Sonia Hernández-Díaz
AU  - Martha M Werler
AU  - Allen A Mitchell
PY  - 2002
DO  - 10.1093/aje/155.2.176
UR  - https://pubmed.ncbi.nlm.nih.gov/11790682/
ID  - 11790682
ER  -