1. Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
2. Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
3. Partners Multiple Sclerosis Center, Brigham and Women’s Hospital, Boston, Massachusetts
4. Department of Neurology, Harvard Medical School, Boston, Massachusetts
5. Biostatistics Center, Massachusetts General Hospital, Boston, Massachusetts
6. Department of Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, Bethesda, Maryland
7. Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
8. Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts