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This CRF collects general history about recreational products used. There are 2 sections in of this example . CRF: The questions in the first section focus on the whether any recreational products were used. , and the questions in the second section are for each recreational product used. The applicant did not include subject subjects that did not use recreational products in the SDTM datsetdataset.   In order to save space, some of the permissible values are only shown in the metadata specifications. 

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