Poll on thoracic surgical training.
D006348:Cardiac Surgical Procedures / Q000193:education; D002568:Certification; D004503:Education, Medical, Graduate; D005069:Evaluation Studies as Topic; D005544:Forecasting; D013502:General Surgery / Q000193:education*; D011364:Professional Practice; D013903:Thoracic Surgery; D013909:Thorax / Q000601:surgery*; D013997:Time Factors; D014481:United States; D014656:Vascular Surgical Procedures / Q000193:education