Medical organization, medical care and lower income groups.
D001294:Attitude to Health; D001519:Behavior; D003191:Comprehensive Health Care; D004636:Emergency Service, Hospital; D006266:Health Education; D006285:Health Planning; D006761:Hospitals; D006801:Humans; D007182:Income; D007398:Interpersonal Relations; D010044:Outpatient Clinics, Hospital; D010548:Personal Health Services / Q000706:statistics & numerical data; D010817:Physician-Patient Relations; D011787:Quality of Health Care; D012959:Socioeconomic Factors; D014481:United States