Has the participant regularly taken aspirin medications, at least two pills per week for 6 months or longer? as part of the Risk Factor Questionnaire for Nonsteroidal Anti-Inflammatory Drugs (NSAIDS) and Calcium Channel Blockers (CCB)
Has the participant regularly taken aspirin medications, at least two pills per week for 6 months or longer? as part of the Risk Factor Questionnaire for Nonsteroidal Anti-Inflammatory Drugs (NSAIDS) and Calcium Channel Blockers (CCB)
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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.