1. Division of Health Policy and Economics, Department of Population Health Sciences, Weill Cornell Medical College, New York, New York (A.M.B., L.P.C., M.A.U., M.Z.)
2. Department of Family Medicine, School of Medicine, University of California San Diego, La Jolla, California (M.T.)
3. Department of Health Policy and Management, Yale University, New Haven, Connecticut (Y.Q.)
4. Herbert Wertheim School of Public Health, University of California San Diego, La Jolla, California (R.K.).