title: Six horsemen ride out: WHO initiates a new programme on substance abuse.
mesh_terms: D000437:Alcoholism; D006801:Humans; D013287:Illicit Drugs; D007391:International Cooperation; D016730:Program Development / Q000191:economics; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000517:prevention & control*; D014944:World Health Organization
chemical_list: D013287:Illicit Drugs