Video of Benjamin E. Bierbaum, MD with Patient Having Knee Joint Replacement
New England Baptist Hospital, Boston, Massachusetts (4-minute video)
Dr. Bierbaum, former Chief of Orthopedic Surgery
Video of Lawrence. H. Cohn, MD with Patient Having Cardiac Surgery to Repair a Mitral Valve
Brigham and Women's Hospital, Boston, Massachusetts (11-minute video)
Dr. Cohn, Professor of Cardiac Surgery, Harvard Medical School
Former Chief of Cardiac Surgery