Center of Studies on Alcohol and Addictions;
Antiguo Hospital Civil de Guadalajara;
Department of Medical Clinics;
Universidad de Guadalajara;
Prevention Sciences Research Center and School of Community Health and Policy;
Morgan State University;
Charité-Universit?tsmedizin Berlin;
NeuroCure Clinical Research Center;
School of Social Work;
University of Maryland;
Tobacco; Alcohol; Marijuana; Illegal; drugs; Mexico; Students; Epidemiology;