1. Institute for Biomedical Informatics, University of Kentucky College of Medicine, Lexington
2. Division of Health Sciences, The Ohio State University Wexner Medical Center, Columbus
3. National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland
4. Center on Drug and Alcohol Research, College of Medicine, University of Kentucky, Lexington
5. Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, Florida
6. Clinical Addiction Research & Education Unit, Boston University School of Medicine, Boston, Massachusetts
7. Department of Biostatistics, College of Public Health, University of Kentucky, Lexington