TY  - RPRT
TI  - Epidemiology 101: III. A 19th century example.
AU  - D E Lilienfeld
PY  - 1981
DO  - 10.1093/ije/10.1.69
UR  - https://pubmed.ncbi.nlm.nih.gov/7016777/
ID  - 7016777
ER  -