1. Department of Medicine Section of General Internal Medicine Clinical Addiction Research and Education (CARE) Unit Boston University School of Medicine/Boston Medical Center Boston MA USA
2. Department of Biostatistics Boston University School of Public Health Boston MA USA
3. Data Coordinating Center Boston University School of Public Health Boston MA USA
4. Institute of Pharmacology St. Petersburg Pavlov State Medical University St. Petersburg Russia
5. Laboratory of Clinical Pharmacology of Addictions St. Petersburg Pavlov State Medical University St. Petersburg Russia
6. Department of Addictions Bekhterev Research Psychoneurological Institute St. Petersburg Russia
7. Department of Community Health Sciences Boston University School of Public Health Boston MA USA