Identification of underprivileged areas.
D000368:Aged; D002675:Child, Preschool; D005194:Family Practice; D006301:Health Services Needs and Demand; D006801:Humans; D008131:London; D008507:Medically Underserved Area; D011320:Primary Health Care; D011787:Quality of Health Care; D012959:Socioeconomic Factors; D013222:State Medicine; D006113:United Kingdom