title: Effect of residents' use of laboratory tests on hospital costs.
mesh_terms: D019411:Clinical Laboratory Techniques / Q000191:economics* / Q000706:statistics & numerical data; D003365:Costs and Cost Analysis; D004469:Economics, Hospital; D005260:Female; D006785:Hospitals, University / Q000191:economics; D006801:Humans; D007396:Internship and Residency; D008297:Male; D008875:Middle Aged