About: http://webisa.webdatacommons.org/104202500

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	Covariates such as age, sex, smoking status, and betel nut chewing were compared
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca