title: The upper crust.
authors: MGMA Practice Management Resources, USA. dng@mgma.com
authors: David N
authors: DN
authors: Gans
mesh_terms: D005260:Female; D006801:Humans; D007182:Income / Q000706:statistics & numerical data*; D008297:Male; D010820:Physicians / Q000191:economics*; D014481:United States