About: http://webisa.webdatacommons.org/220209540

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	but not in the prevalence of other types of headache.
http://www.w3.org/ns/prov#wasQuotedFrom	thejournalofheadacheandpain.com