title: A world of difference.
authors.forename: Emily
authors.initials: E
authors.lastname: Underwood
mesh_terms: D019049:Developed Countries / Q000191:economics* / Q000706:statistics & numerical data; D003906:Developing Countries / Q000191:economics* / Q000706:statistics & numerical data; D007182:Income / Q000706:statistics & numerical data*; D012959:Socioeconomic Factors; D014481:United States