Is the heart bypass necessary? Cardiologists debate surgery's usefulness for angina victims.
D000787:Angina Pectoris / Q000601:surgery*; D001026:Coronary Artery Bypass / Q000191:economics; D003362:Cost-Benefit Analysis; D006801:Humans; D014481:United States; D014493:United States Department of Veterans Affairs; D014600:Utilization Review