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