About: http://webisa.webdatacommons.org/198228559

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	A step up from the retrospective, after the fact sort of study is the observational cohort study.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com