title: How many rich doctors are there?
authors.affiliation: University of Pennsylvania School of Medicine.
authors.forename: D J
authors.initials: DJ
authors.lastname: Shulkin
mesh_terms: D006801:Humans; D007396:Internship and Residency / Q000191:economics; D010414:Pennsylvania; D010820:Physicians / Q000191:economics*; D014146:Training Support / Q000191:economics; D014481:United States