TY  - RPRT
TI  - Methods in epidemiology.
AU  - Z Stein
AU  - M Susser
PY  - 1981
DO  - 10.1016/s0002-7138(09)61639-3
UR  - https://pubmed.ncbi.nlm.nih.gov/7310016/
ID  - 7310016
ER  -