About: http://webisa.webdatacommons.org/38204242

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	The trained interviewers were aware of whether a subject was a case or control, but adhered strictly to the wording of the questionnaire.
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com