1. Department of Family Medicine, University of Washington School of Medicine , Seattle, WA , USA
2. Cornerstone Whole Healthcare Organization Inc , Payette, ID , USA
3. Department of Mathematics and Statistics, University of Vermont , Burlington, VT , USA
4. National Committee for Quality Assurance (NCQA) , Washington, DC , USA
5. Department of Family Medicine, University of Colorado Anschutz Medical Campus , Aurora, CO , USA