About: http://webisa.webdatacommons.org/229322836

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Participants were also asked whether they had taken vitamins or dietary supplements, including vitamin A, vitamin C, vitamin E, multivitamins, and fish oil supplements, for at least 1 week in the previous month.
http://www.w3.org/ns/prov#wasQuotedFrom	annals.org