TY  - RPRT
TI  - Confounding in air pollution epidemiology: when does two-stage regression identify the problem?
AU  - A H Marcus
AU  - S R Kegler
PY  - 2001
DO  - 10.1289/ehp.011091193
UR  - https://pubmed.ncbi.nlm.nih.gov/11748025/
ID  - 11748025
ER  -