1. Department of Community and Family Medicine, Geisel School of Medicine at Dartmouth and Dartmouth-Hitchcock-Health, Lebanon, New Hampshire, USA.
2. The Dartmouth Institute for Health Policy & Clinical Practice, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA.
3. Department of Psychiatry, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA.
4. Multiple Sclerosis Specialty Care Program, Concord Hospital Neurology, Concord, New Hampshire, USA.
5. Jefferson College of Population Health, Philadelphia, Pennsylvania, USA,
6. Randy Messier, LLC, Fairfield, Vermont, USA
7. Multiple Sclerosis Center, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.
8. Multiple Sclerosis Center, Department of Neurology, University of Vermont Medical Center and Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA.
9. Neurology Associates, PC, Maitland, Florida, USA.
10. United States Medical, Biogen, Weston, Massachusetts, USA.