1 122591836Clinical Addiction Research and Education Unit, Section of General Internal Medicine, Department of Medicine, Boston University School of Medicine & Boston Medical Center, Boston, MA, USA.
2 1854Massachusetts Department of Public Health, Boston, MA, USA.
3 Opioid Policy Research Collaborative, Institute for Behavioral Health, Heller School for Social Policy and Management, Brandeis University, Waltham, MA, USA.
4 164186Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA.