TY  - RPRT
TI  - Validity of exposure data derived from a structured questionnaire.
AU  - M Joffe
PY  - 1992
DO  - 10.1093/oxfordjournals.aje.a116323
UR  - https://pubmed.ncbi.nlm.nih.gov/1570822/
ID  - 1570822
ER  -