@BOOK{NAP9538, title = "Preparing for the 21st Century: Focusing on Quality in a Changing Health Care System", doi = "10.17226/9538", url = "https://nap.nationalacademies.org/catalog/9538/preparing-for-the-21st-century-focusing-on-quality-in-a-changing-health-care-system", year = 1997, publisher = "The National Academies Press", address = "Washington, DC" }