TY  - RPRT
TI  - [Methodological problems in health-environment ecological studies].
AU  - S Richardson
PY  - 2000
DO  - 10.1016/s0764-4469(00)00162-1
UR  - https://pubmed.ncbi.nlm.nih.gov/10983271/
ID  - 10983271
ER  -