TY  - RPRT
TI  - [Causality an causal-inference in epidemiologic study].
AU  - Qiu-shan Tao
AU  - Si-yan Zhan
AU  - Li-ming Li
PY  - 2004
UR  - https://pubmed.ncbi.nlm.nih.gov/15769342/
ID  - 15769342
ER  -