Veterans Administration Coronary Cooperative Study. Cooperating vs noncooperating hospitals.
D000787:Angina Pectoris / Q000601:surgery*; D001026:Coronary Artery Bypass / Q000706:statistics & numerical data*; D005069:Evaluation Studies as Topic; D006787:Hospitals, Veterans; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000401:mortality; D014481:United States; D014493:United States Department of Veterans Affairs