<http://webisa.webdatacommons.org/prov/272583859>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/3359898> .
<http://webisa.webdatacommons.org/3359898>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<biomedsearch.com> .
<http://webisa.webdatacommons.org/3359898>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/3359898>	<http://www.w3.org/ns/prov#value>	"Often it is lifestyle factors that are the most important in predisposing to cancer, such as use of tobacco, betel, alcohol or sometimes environmental and genetic factors may also play a role to varying degrees.[14] Tobacco and alcohol are considered as the main risk factors for cancer of the upper aero-digestive tract." .