1. Department of Internal Medicine, University of Michigan Medical School, Ann Arbor2Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan3Institute for Social Research, University of Michigan, Ann Arbor4Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
2. Group Health Research Institute, Departments of Medicine and Health Services, University of Washington, Seattle
3. Andrus Gerontology Center, University of Southern California, Los Angeles
4. Institute for Social Research, University of Michigan, Ann Arbor
5. Department of Internal Medicine, University of Michigan Medical School, Ann Arbor2Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan4Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor7Department of Neurology and Stroke Program, University of Michigan, Ann Arbor
6. Department of Internal Medicine, University of Michigan Medical School, Ann Arbor2Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan