title: Narcotics-related deaths decrease in 1972 from the number of narcotics-related deaths in 1971.
mesh_terms: D003334:Coroners and Medical Examiners; D004812:Epidemiologic Methods; D006556:Heroin Dependence / Q000401:mortality; D006801:Humans; D008691:Methadone / Q000506:poisoning; D009294:Narcotics; D019966:Substance-Related Disorders / Q000401:mortality*; D014481:United States; D014505:Urban Population
chemical_list: D009294:Narcotics; D008691:Methadone