Changes in regulations.
D000574:American Medical Association; D000776:Anesthesiology / Q000193:education; D004521:Educational Measurement; D005249:Fees and Charges; D006075:Governing Board; D007396:Internship and Residency; D008004:Licensure; D008887:Military Medicine; D010021:Osteopathic Medicine / Q000193:education; D014481:United States