1. Minneapolis Veterans Affairs Health Care System and University of Minnesota, Minneapolis, Minnesota (A.K.B., A.C.M.)
2. Center for Care Delivery and Outcomes Research, Minneapolis Veterans Affairs Health Care System, Minneapolis, Minnesota (N.G., B.N.M., R.M., E.J.L.)
3. Center for Care Delivery and Outcomes Research, Minneapolis Veterans Affairs Health Care System, and University of Minnesota, Minneapolis, Minnesota (T.J.W.)