@misc{indiciae233edb701a2c, title = {Re: "Validity of exposure data derived from a structured questionnaire".}, author = {J W van der Gulden and P F Vogelzang and J J Kolk}, year = {1993}, doi = {10.1093/oxfordjournals.aje.a116865}, url = {https://pubmed.ncbi.nlm.nih.gov/8356974/}, note = {Source identifier: 8356974} }