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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	Systematic Review Standiford Helm II, MD, Salim M. Hayek, MD, PhD, Ramsin M. Benyamin, MD, and Laxmaiah Manchikanti, MD BACKGROUND: Chronic discogenic low back pain is a common problem with significant personal and societal costs.
http://www.w3.org/ns/prov#wasQuotedFrom	painphysicianjournal.com