1. Department of Economics, University of New Mexico, Albuquerque, NM, USA;
2. School of Medicine, Boston University, Boston, MA, USA;
3. School of Public Health, Indiana University, Bloomington, IN, USA;
4. VA Center for Healthcare Organization and Implementation Research, Bedford, MA, USA;
5. The Comparative Health Outcomes, Policy, and Economics (CHOICE) Institute, Department of Pharmacy, University of Washington, Seattle, WA