About: http://webisa.webdatacommons.org/440342228

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	Thus, vitamin D supplementation may help relieve headaches, especially in patients who do not respond well to conventional therapy, report the authors of a September 2009 study in the journal ???Headache.???
http://www.w3.org/ns/prov#wasQuotedFrom	craighitchenstherapies.com