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"Variable Name","Variable ID","Variable Description",Version,"dbGaP Mapping" PX741203_Tobacco_Retailer_Density_School1000,PX741203030100,"What is the number of tobacco retailers within 1000 meter service area around each local park and parcel containing schools?",0,https://www.phenxtoolkit.org/protocols/view/741203 PX741203_Tobacco_Retailer_Density_School1000_Calculated,PX741203030200,"What is the density? (Divide count by land area for each buffer. Land area is to be extracted from Census 2010 data)",0,https://www.phenxtoolkit.org/protocols/view/741203 PX741203_Tobacco_Retailer_Density_School350,PX741203010100,"What is the number of tobacco retailers within 350 meter service area around each local park and parcel containing schools?",0,https://www.phenxtoolkit.org/protocols/view/741203 PX741203_Tobacco_Retailer_Density_School350_Calculated,PX741203010200,"What is the density? (Divide count by land area for each buffer. Land area is to be extracted from Census 2010 data)",0,https://www.phenxtoolkit.org/protocols/view/741203 PX741203_Tobacco_Retailer_Density_School500,PX741203020100,"What is the number of tobacco retailers within 500 meter service area around each local park and parcel containing schools?",0,https://www.phenxtoolkit.org/protocols/view/741203 PX741203_Tobacco_Retailer_Density_School500_Calculated,PX741203020200,"What is the density? (Divide count by land area for each buffer. Land area is to be extracted from Census 2010 data)",0,https://www.phenxtoolkit.org/protocols/view/741203