Residents and residencies.
D000068:Accreditation; D000574:American Medical Association; D004503:Education, Medical, Graduate / Q000592:standards; D013502:General Surgery; D049673:History, 20th Century; D006784:Hospitals, Teaching; D007396:Internship and Residency / Q000266:history / Q000592:standards*; D008511:Medicine; D012577:Schools, Medical; D012955:Societies, Medical; D013038:Specialization; D013909:Thorax; D014481:United States