<http://webisa.webdatacommons.org/254191101>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<biomedcentral.com> .
<http://webisa.webdatacommons.org/254191101>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/319663091>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/254191101> .
<http://webisa.webdatacommons.org/254191101>	<http://www.w3.org/ns/prov#value>	"However, CEA is an invasive surgical procedure, and carries the associated risks" .