Health (2) Salud (2) Programs (1) Futures (1) Youth (1) Viola (1) Tobacco (1) Students (1) Sociology (1) Psychology (1) Perception (1) Optometry (1) Occupations (1) Nursing (1) Mexicans (1) Medicine (1) Life (1) Interpersonal relations (1) Human behavior (1) Happiness (1) Good and evil (1) Drinking of alcoholic beverages (1) College students (1) College graduates (1) Chronic diseases (1) Biology (1) Bebidas alcohólicas--Consumo (1) Programas (1) Futuros (1) Enfermedades crónicas (1)