title: Cross-national differences in clinically significant cannabis problems: epidemiologic evidence from 'cannabis-only' smokers in the United States, Mexico, and Colombia.
authors.affiliation: Department of Epidemiology, College of Human Medicine, Michigan State University, East Lansing, USA. janthony@msu.edu.
authors.forename: Fabian
authors.initials: F
authors.lastname: Fiestas
authors.forename: Mirjana
authors.initials: M
authors.lastname: Radovanovic
authors.forename: Silvia S
authors.initials: SS
authors.lastname: Martins
authors.forename: Maria E
authors.initials: ME
authors.lastname: Medina-Mora
authors.forename: Jose
authors.initials: J
authors.lastname: Posada-Villa
authors.forename: James C
authors.initials: JC
authors.lastname: Anthony