About: http://webisa.webdatacommons.org/421104732

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	In a population-based, case-control study, anemia was a significant risk factor for later PD, but only when it was documented long before PD (median, 20 years).
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com