1. Addiction Center, Department of Psychiatry, University of Michigan, Ann Arbor, Michigan, USA
2. Department of Psychology, University of Tennessee, Chattanooga, Tennessee, USA
3. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan, USA
4. VA Center for Clinical Management Research, Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
5. College of Nursing, University of Rhode Island, Kingston, Rhode Island, USA
6. Department of Psychiatry, Oregon Health and Sciences University, Portland, Oregon, USA
7. Department of Psychiatry, University of Michigan, Ann Arbor, Michigan, USA
8. Institute for Social Research, University of Michigan, Ann Arbor, Michigan, USA