About the Authors

James H. Bishop

Affiliation Department of Neurological Sciences, University of Vermont, Burlington, Vermont, United States of America

James R. Fox

Affiliation Department of Neurological Sciences, University of Vermont, Burlington, Vermont, United States of America

Rhonda Maple

Affiliation Department of Neurological Sciences, University of Vermont, Burlington, Vermont, United States of America

Caitlin Loretan

Affiliation Department of Neurological Sciences, University of Vermont, Burlington, Vermont, United States of America

Gary J. Badger

Affiliation Department of Medical Biostatistics, University of Vermont, Burlington, Vermont, United States of America

Sharon M. Henry

Affiliation Department of Rehabilitation and Movement Science, University of Vermont, Burlington, Vermont, United States of America

Margaret A. Vizzard

Affiliation Department of Neurological Sciences, University of Vermont, Burlington, Vermont, United States of America

Helene M. Langevin

hlangevin@partners.org

Affiliations Department of Neurological Sciences, University of Vermont, Burlington, Vermont, United States of America, Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared no competing interests exist.

Author Contributions

Conceived and designed the experiments: HML GJB SMH. Performed the experiments: JHB JRF RM CL. Analyzed the data: GJB HML JHB JRF RM CL. Contributed reagents/materials/analysis tools: MAV. Wrote the paper: HML JHB JRF GJB MAV SMH CL RM.