1. Ann Arbor Department of Veterans Affairs (VA) Center for Clinical Management Research, Ann Arbor, Michigan
2. School of Public Health, University of Michigan, Ann Arbor
3. Department of Internal Medicine, School of Medicine, University of Michigan, Ann Arbor
4. Chronic Pain and Fatigue Research Center, University of Michigan, Ann Arbor
5. Pain Research, Informatics, Multimorbidities, and Education (PRIME) Center, VA Connecticut Healthcare System, West Haven, Connecticut
6. Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut
7. Department of Psychology, Yale University, New Haven, Connecticut
8. Department of Neurology, Yale School of Medicine, New Haven, Connecticut
9. Department of Clinical, Social, and Administrative Sciences, College of Pharmacy, University of Michigan, Ann Arbor
10. VA Boston Healthcare System, Boston, Massachusetts
11. Boston University School of Medicine, Boston, Massachusetts
12. Yale Center for Analytical Sciences, Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut