Berwick DM, Nolan TW, Whittington J. The Triple Aim: Care, health, and cost. Health Affairs. 2008 May/June;27(3):759-769.
Improving the US health care system requires simultaneous pursuit of three aims: improving the experience of care, improving the health of populations, and reducing per capita costs of health care. Preconditions for this include the enrollment of an identified population, a commitment to universality for its members, and the existence of an organization (an "integrator") that accepts responsibility for all three aims for that population.