About: http://webisa.webdatacommons.org/53179852

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	About 20 percent of migraine patients also experience an aura, such as seeing black spots, colored flashing lights or jagged streaks of light.
http://www.w3.org/ns/prov#wasQuotedFrom	avera.org