Affiliation: | 1. Department of Medicine, Section of General Internal Medicine, Boston Medical Center, Clinical Addiction Research and Education (CARE) Unit, Boston, MA, USA;2. Vanderbilt Center for Clinical Cardiovascular Trials Evaluation (V-CREATE), Vanderbilt University Medical Center, Nashville, TN, USA;3. First Pavlov State Medical University of St. Petersburg, St. Petersburg, Russian Federation;4. Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA |