1. Vital and Health Statistics: Detailed Diagnosis and Procedures for Patients Discharged From Short Stay Hospitals;National Center For Health Statistics;US Department of Health and Human Services, Public Health Service, Series B, No. 90,1987
2. The natural history of unstable angina;Julian,1985
3. Aspirin, heparin, or both to treat acute unstable angina;Theroux;N Engl J Med,1988
4. Risk of myocardial infarction and death during treatment with low dose aspirin and intravenous heparin in men with unstable coronary artery disease;Lancet,1990
5. Unstable angina and coronary angioplasty;Myler;Circulation,1990