1. H-Y. Jung, PhD, Department of Healthcare Policy and Research, Weill Cornell Medical College, 425 East 67th St, New York, NY 10065 (USA).
2. A.N. Trivedi, MD, MPH, Providence VA Medical Center, Providence, Rhode Island, and Department of Health Services, Policy and Practice, Alpert Medical School of Brown University, Providence, Rhode Island.
3. D.C. Grabowski, PhD, Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts.
4. V. Mor, PhD, Department of Health Services, Policy and Practice, Alpert Medical School of Brown University and Providence VA Medical Center.