Lugar de publicación
- Perception of harm and benefits of adolescents about the use of marijuana, province of conception, Chile. 28:1-12. 2019
- Perception of harm and benefits of cannabis use among adolescents from latin America and caribe. 28:1-14. 2019
- Urban residents attitudes towards people with drug abuse in five districts of concepcion commune, chile. 28(spe.):1-12. 2019