title: Medical student use of marijuana, alcohol, and cigarettes: a study of four schools.
mesh_terms: D000428:Alcohol Drinking; D001291:Attitude of Health Personnel; D002188:Cannabis; D006801:Humans; D007880:Legislation, Drug; D010820:Physicians; D010947:Plants, Toxic; D012577:Schools, Medical; D012907:Smoking; D013337:Students, Medical; D019966:Substance-Related Disorders / Q000453:epidemiology; D011795:Surveys and Questionnaires; D014026:Nicotiana; D014481:United States