1. World Health Organization: Chronic diseases. http://www.who.int/topics/chronic_diseases/en/ .
2. Department of Health and Human Services: National Strategy for Quality Improvement in Health Care. March 2011, , Washington DC, http://www.healthcare.gov/law/resources/reports/quality03212011a.html .
3. Ovretveit J: Does clinical coordination improve quality and save money?. June 2011, The Health Foundation, London
4. Medicare Payment Advisory Commission: MedPAC Report to Congress. 2007, MedPAC, Washington DC, http://www.medpac.gov/documents/jun07_EntireReport.pdf .
5. Miller M: Payments to Promote Delivery System Integration. The Healthcare Imperative: Lowering Costs and Improving Outcomes. 2010, Institute of Medicine, Washington, DC