1. Report to congress: national strategy for quality improvement in health care,2011
2. Crossing the quality chasm: a new health system for the 21st century,2001
3. Centers for Medicare & Medicaid Services. Patient-reported outcomes following elective primary total hip and/or total knee arthroplasty: Hospital-level performance measure(s), http://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-Instruments/HospitalQualityInits/Measure-Methodology.html; [accessed 25.04.16].
4. Guidance for industry: patient-reported outcomes measures: use in medical product development to support labeling claims,2009
5. Projections of primary and revision hip and knee arthroplasty in the United States from 2005 to 2030;Kurtz;J Bone Joint Surg Am,2007