1. Recovery Outcomes Institute, Boynton Beach, Florida, USA
2. Centre for Addiction Recovery Research (CARR), Leeds Trinity University, Leeds, UK
3. Therapeutic Solutions (Addictions) Ltd, London, UK
4. Recovery Research Institute, Harvard Medical School, Boston, Massachusetts, USA
5. Statistical Services Centre, Reading, UK
6. Virginia Association of Recovery Residences, Richmond, Virginia, USA
7. Chestnut Health Systems, Bloomington, Illinois, USA
8. Chesterfield County Jail, Chesterfield, Virginia, USA