1. Department of Medicine, Tufts University School of Medicine, Boston, MA 02111, USA
2. Center for Interdisciplinary Population and Health Research, MaineHealth Institute for Research, Portland, ME, USA
3. Divisions of Infectious Disease and Addiction Medicine, Department of Medicine, Maine Medical Center, 41 Donald B. Dean Drive, Suite B, South Portland, ME 04106, USA
4. Department of Medical Ethics, Tufts University School of Medicine, Boston, MA, USA
5. Division of Infectious Diseases, Oregon Health & Science University, Portland, OR, USA
6. Division of Infectious Disease, Brigham and Women’s Hospital, Boston, MA, USA
7. Section of Infectious Disease and International Health, Dartmouth Hitchcock Medical Center, Lebanon, NH, USA
8. Department of Medicine, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
9. Division of Infectious Disease, School of Medicine, The University of Alabama at Birmingham, Birmingham, AL, USA
10. Division of Palliative Care, Maine Medical Center, Portland, ME, USA
11. Department of Medical Education, Tufts University School of Medicine, Boston, MA, USA
12. Department of Medicine, Maine Medical Center, Portland, ME, USA
13. Office of Research, UMass Chan Medical School, Worcester, MA, USA
14. Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA, USA
15. Frank Chessa is also affiliated to Maine Medical Center, Portland, ME, USA