1. Goroll AH, May LA, Mulley AG. Primary care medicine. Philadelphia: J. B. Lippincott, 1981;6–9.
2. Committee for evaluating medical technologies in clinical use of the Institute of Medicine. Assessing medical technologies. Washington. DC: National Academy Press, 1985;82.
3. Goldman L. Quantitative aspects of clinical reasoning. In: Braunwald E, Isselbacher KJ, Petersdorf RG, Wilson JD, Martin JB, Fauci AS, eds. Harrison’s princples of internal medicine. 11th ed. New York: McGraw Hill Book Company, 1987;7.
4. Buck AA, Gart JJ. Comparison of a screening test and a referent test in epidemiologic studies. Am J Epidemiol 1966;83:586–92.
5. Hui SL, Walter SD. Estimating the error rates of diagnostic tests. Biometrics 1980;36:167–71.