Changing patterns of surgical training and practice.
D002568:Certification; D002983:Clinical Competence; D004503:Education, Medical, Graduate / Q000266:history / Q000639:trends*; D013502:General Surgery / Q000193:education* / Q000266:history / Q000639:trends; D049673:History, 20th Century; D006801:Humans; D007396:Internship and Residency; D006278:Medicare; D012106:Research; D014481:United States