Meredith B. Rosenthal, Mary Beth Landrum, Ellen Meara, Haiden A. Huskamp, Rena M. Conti, and Nancy L. Keating
Health Services Research (OnlineEarly Articles). doi:10.1111/j.1475-6773.2007.00744.x
Health Services Research (OnlineEarly Articles). doi:10.1111/j.1475-6773.2007.00744.x