éducation (formation) (1) échantillonnage (1) alcool (1) enfant (1) Drug use (1) Teenagers (1) Year (1) Sampling (1) Perception (1) Interpersonal relations (1) Drug utilization (1) Drug abuse (1) Drinking of alcoholic beverages (1) Consumers (1) Alcohol (1) Sampling (1) Relations (1) Number (1) adolescent (1) père (1)