1. The Concise Oxford Dictionary, 7th Ed. Toronto: Oxford University Press, 1986.
2. Donabedian A. Promoting quality through evaluating the process of patient care. Med Care 1968; 6: 181–202.
3. Wennberg JE. Variations in medical practice and hospital costs.In: Graham NO (Ed.). Quality Assurance in Hospitals, 2nd ed. Rockville, MD: Aspen Publishers Inc., 1990; 221.
4. MacIntosh AM, McCutcheon DJ. “Stretching” to continuous quality improvement from quality assurance: a framework for quality management. Canadian Journal of Quality in Health Care 1992; 9: 19–22.
5. Berwick DM, Enthoven A, Bunker JP. Quality management in the NHS: The doctor’s role-I. BMJ 1992; 304: 235–9.