On the intraurban ecology of primary care physicians.
D001900:Boston; D003710:Demography; D005163:Factor Analysis, Statistical; D005194:Family Practice; D007388:Internal Medicine; D008962:Models, Theoretical; D010372:Pediatrics; D010820:Physicians / Q000600:supply & distribution*; D012959:Socioeconomic Factors; D014505:Urban Population; D000078329:Workforce