1. Available at: https://www.cms.gov/research-statistics-data-and-systems/statistics-trends-and-reports/nationalhealthexpenddata/nationalhealthaccountshistorical.html. Accessed April 14, 2017.
2. Challenges in quality assessment of dental care;Bader;J Am Dent Assoc,2009
3. Crossing the quality chasm: a new health system for the 21st century. Committee on quality health care in America, Institute of Medicine,2001
4. American Dental Association, Evidence-based dentistry–Clinical Practice Guidelines; Available at: http://ebd.ada.org/en/evidence/guidelines. Accessed August 14, 2017.
5. American Dental Association, Dental Quality Alliance; DQA measures activities; Available at: http://www.ada.org/en/science-research/dental-quality-alliance/dqa-measure-activities; Accessed August 14, 2017.