Symposium introduction.
D004503:Education, Medical, Graduate / Q000191:economics / Q000639:trends*; D013502:General Surgery / Q000191:economics / Q000193:education*; D006801:Humans; D007396:Internship and Residency / Q000191:economics / Q000639:trends; D010561:Personnel Staffing and Scheduling; D010820:Physicians / Q000600:supply & distribution; D016526:Workload