1. RTI International, Research Triangle Park, NC, USA
2. Substance Abuse and Mental Health Services, Rockville, MD, USA
3. National Institute of Mental Health, Bethesda, MD, USA
4. University of Puerto Rico, San Juan, Puerto Rico
5. University of Massachusetts Boston, USA
6. Duke University, Durham, NC, USA
7. Columbia University, New York, NY, USA
8. Yale University, New Haven, CT, USA
9. University of New Mexico, Albuquerque, USA
10. Management & Training Innovations, McLean, VA, USA
11. Mathematica Policy Research, Washington, DC, USA