1. Indexes and criteria of the therapeutic response;Feinstein,1967
2. The clinician's responsibility for helping to improve the treatment of tomorrow's patients;McPeek;New Engl J Med,1980
3. Chronic disease, function, and the quality of care;Cluff;J Chron Dis,1981
4. Health Status Indexes: disease specific vs. general population measures;Barofsky,1979
5. Assessing the quality of medical care using outcome measures: An overview of the method;Brook;Med Care,1977