Residency training programs in thoracic and cardiac surgery--1972.
D006348:Cardiac Surgical Procedures / Q000193:education*; D002568:Certification; D007396:Internship and Residency; D013038:Specialization; D013903:Thoracic Surgery; D013909:Thorax / Q000601:surgery*; D013997:Time Factors; D014481:United States