1. Johns Hopkins School of Public Health & School of Medicine, Institute for Social Research, Baltimore, Maryland
2. University of Colorado School of Public Health
3. Institute for Social Research, University of Michigan Medical School, Ann Arbor, Michigan
4. University of Michigan Medical School, Ann Arbor
5. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
6. Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan
7. Federal Reserve Board of Governors & Howard University, Washington, DC
8. Howard University