1. RAND Corporation, Boston, MA, USA
2. Boston University School of Medicine, MA, USA
3. RAND Corporation, Santa Monica, CA, USA
4. UCLA Fielding School of Public Health, USA
5. RAND Corporation, Pittsburgh, PA, USA
6. RAND Corporation, Arlington, VA, USA
7. Northwestern University Feinberg School of Medicine, Chicago, IL, USA
8. Brigham and Women’s Hospital, Boston, MA, USA