<http://webisa.webdatacommons.org/193073404>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com.au> .
<http://webisa.webdatacommons.org/193073404>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/193073404>	<http://www.w3.org/ns/prov#value>	"Therefore, there is a need for a heart retractor which will support a heart, especially a beating heart, during coronary surgery and which can be adjusted to fit the particular needs of the individual heart and will support the heart both in gross and regionally." .
<http://webisa.webdatacommons.org/prov/371657370>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/193073404> .