1. Shannon, R. H., and Ball, M. J., A patient-oriented classification of medical data.Biosci. Commun. 2:282–292, 1976.
2. Kemeny, J. G.,Man and the Computer. Scribner, New York, 1972, p. 54.
3. Nilson, N. J., Artificial intelligence.Proceedings of the IFIP Congress 1974, North-Holland Publ., Amsterdam, 1974, pp. 802–805.
4. Shortliffe, E. H.,Computer-Based Medical Consultations, American Elsevier, New York, 1976, pp. 28–32.
5. Warner, H. R., Olmstead, C. M., and Rutherford, B. D., HELP—A program for medical decisionmaking.Comput. Biomed. Res. 5:65–74, 1972.