1. RAND Corporation; Pittsburgh PA
2. Health Outcomes Research; Truven Health Analytics; Ann Arbor MI
3. Health Outcomes Research; Truven Health Analytics; Santa Barbara CA
4. Center for Delivery, Organization and Markets; Agency for Healthcare Research and Quality; Rockville MD
5. Health Research Division; Mathematica Policy Research; Ann Arbor MI
6. Center for Interdisciplinary Health Workforce Studies at Montana State University; Bozeman MT