TY  - RPRT
TI  - Re: "Validity of exposure data derived from a structured questionnaire".
AU  - J W van der Gulden
AU  - P F Vogelzang
AU  - J J Kolk
PY  - 1993
DO  - 10.1093/oxfordjournals.aje.a116865
UR  - https://pubmed.ncbi.nlm.nih.gov/8356974/
ID  - 8356974
ER  -