Drugs of abuse (2) Students (2) Marijuana (2) Health (2) Hallucinogenic drugs (2) Education, Higher (2) Drug abuse (2) Consumption (Economics) (2) College students (2) Drogas--Consumo (2) Estudios (2) Salud (2) Marihuana (2) Estudio (2) Alucinógenos (2) Estudiantes (2) Drogas (2) Estudiantes universitarios (2) Enseñanza superior (2) Consumo (2) Correspondence analysis (Statistics) (1) Labor (1) Origin (1) Youth (1) Worry (1) Women physicians (1) Vocation (1) Tobacco (1) Research (1) Population (1)