title: Medicaid HMO enrollees in the emergency room: use of nonemergency care.
authors.forename: P A
authors.initials: PA
authors.lastname: Butler
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D001294:Attitude to Health; D002648:Child; D003120:Colorado; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005260:Female; D006279:Health Maintenance Organizations; D006300:Health Services Misuse; D006801:Humans; D008297:Male; D008484:Medicaid; D008875:Middle Aged; D017060:Patient Satisfaction; D011320:Primary Health Care / Q000706:statistics & numerical data; D014481:United States