<http://webisa.webdatacommons.org/213572838>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/213572838>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<pubmedcentralcanada.ca> .
<http://webisa.webdatacommons.org/213572838>	<http://www.w3.org/ns/prov#value>	"Operating time is a main outcome studied in most of the included trials.2,3,6,7 In one additional study,8 operating time was considered as a secondary outcome with gallbladder perforation being the primary focus of that study." .
<http://webisa.webdatacommons.org/prov/10121221>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/213572838> .