About: http://webisa.webdatacommons.org/408577729

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	Surgery may be necessary if an ulcer recurs or fails to heal or if complications such as bleeding, perforation, or obstruction develop.
http://www.w3.org/ns/prov#wasQuotedFrom	medhelp.org