1. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA
2. Department of Social and Behavioral Sciences, Yale School of Public Health, New Haven, CT, USA
3. Church of Safe Injection, Lewiston, ME, USA
4. Department of General Internal Medicine, School of Medicine, Yale University, New Haven, CT, USA
5. Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
6. Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL, USA
7. Center for Interdisciplinary Population and Health Research, MaineHealth Institute for Research, Portland, ME, USA
8. Department of Medicine, Maine Medical Center, Portland, ME, USA
9. Tufts University School of Medicine, Boston, MA, USA
10. Maine Medical Partners Adult Infectious Diseases, South Portland, ME, USA