About: http://webisa.webdatacommons.org/243121080

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	In cemented types of devices used heretofore, both those having PMMA or other types of precoatings and those without any such precoating, problems have arisen, particularly after a number of years of implantation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr