About: http://webisa.webdatacommons.org/131179875

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	Another challenge is the accuracy and precision with which the target volume and critical structures can be localized day to day, especially for indications other than head and neck.
http://www.w3.org/ns/prov#wasQuotedFrom	aetna.com