About: http://webisa.webdatacommons.org/30212176

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	American Journal of Drug and Alcohol Abuse 37(2): 98-104, 2011. (40 refs.)Background: Previous research suggests gender differences exist in types of substances used and age of first use.
http://www.w3.org/ns/prov#wasQuotedFrom	projectcork.org