1. Johns Hopkins Bloomberg School of Public Health Baltimore Maryland
2. Rollins School of Public HealthEmory University Atlanta Georgia
3. Urban Institute Statistical Methods Group Washington District of Columbia
4. University of Pennsylvania Philadelphia Pennsylvania
5. Robert Wood Johnson Foundation Princeton New Jersey
6. Northwell HealthOffice of Population Health ManagementDonald and Barbara Zucker School of Medicine at Hofstra/Northwell Manhasset New York
7. Urban Institute Health Policy Center Washington District of Columbia