TY  - RPRT
TI  - [Problems in epidemiological methods in occupational medicine].
AU  - A Foldspang
AU  - S Mikkelsen
AU  - J Olsen
AU  - S Sabroe
PY  - 1979
UR  - https://pubmed.ncbi.nlm.nih.gov/419612/
ID  - 419612
ER  -