Text describing the participant's/subject's fourth of four major tasks or duties at the longest held occupation from the age of 56-65 years of age as part of the Risk Factor Questionnaire (RFQ) - Occupation.
Text describing the participant's/subject's fourth of four major tasks or duties at the longest held occupation from the age of 56-65 years of age as part of the Risk Factor Questionnaire (RFQ) - Occupation.
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Epi Info: http://wwwn.cdc.gov/epiinfo/index.htm RFQ-U CRFs, Version 1.0 developed by the Epidemiology Working Group of the collaborative centers for PD.