About: http://webisa.webdatacommons.org/52842454

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	Chronic headache may appear in up to 40% of children before age 7 and 75% by age 15, but most of these headaches are considered tension-type or migraines.
http://www.w3.org/ns/prov#wasQuotedFrom	dynamicchiropractic.com