1. Opportunity cost;Henderson,2019
2. Crossing the Quality Chasm: A New Health System for the 21st Century;Institute of Medicine,2001
3. Measurement framework: evaluating efficiency across patient-focused episodes of care;National Quality Forum,2009
4. National healthcare quality report, 2013 – chapter 8: efficiency;US Department of Health and Human Services,2013
5. Introduction to quality improvement and the FOCUS-PDSA model;American College of Cardiology;Quality Improvement: An ACC Clinical Toolkit,2013