Continued change and constancy.
Dameron
T B
TB
D000047:Academies and Institutes / Q000266:history*; D004503:Education, Medical, Graduate; D004992:Ethics, Medical / Q000266:history; D049673:History, 20th Century; D009985:Orthopedics / Q000193:education / Q000266:history* / Q000639:trends; D012106:Research; D014481:United States