title: A 40-year experiment.
authors: John
authors: J
authors: Saultz
mesh_terms: D004503:Education, Medical, Graduate / Q000706:statistics & numerical data*; D005194:Family Practice / Q000193:education*; D006801:Humans; D007396:Internship and Residency / Q000706:statistics & numerical data*; D000078329:Workforce