1. Department of Health and Exercise Science, University of Oklahoma, Norman
2. Research Center for Group Dynamics, Institute for Social Research, University of Michigan, Ann Arbor
3. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
4. Child Health Evaluation and Research Center, University of Michigan, Ann Arbor
5. Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
6. Department of Internal Medicine, University of Michigan, Ann Arbor
7. Department of Health Management and Policy, University of Michigan, Ann Arbor