1. Critical assessment of routine preoperative investigations;Blery;Effective Health Care,1983
2. Evaluation of a protocol for selective ordering of preoperative tests;Blery;Lancet,1986
3. Usefulness of routine preoperative chest roentgenograms in elderly patients;Boghosian;Journal of the American Geriatric Society,1987
4. Pursuit of abnormal coagulation screening tests generates modest hidden preoperative costs;Bushick;J Gen Intern Med,1989
5. The preoperative electrocardiogram as an indicator of risk in major noncardiac surgery;Carliner;Can J Cardiol,1986