title: Data watch. What are the trends in emergency department visits related to drugs?
mesh_terms: D003042:Cocaine / Q000009:adverse effects; D003625:Data Collection; D062787:Drug Overdose; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D003932:Heroin / Q000009:adverse effects; D006801:Humans; D019966:Substance-Related Disorders / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology
chemical_list: D003932:Heroin; D003042:Cocaine