title: Americans spend one-third of their days in pain.
mesh_terms: D000293:Adolescent; D000328:Adult; D000700:Analgesics / Q000627:therapeutic use; D006801:Humans; D010146:Pain / Q000188:drug therapy / Q000453:epidemiology*; D011795:Surveys and Questionnaires
chemical_list: D000700:Analgesics