About the Authors

Anne-Hilde Muris

a.muris@maastrichtuniversity.nl

Affiliations School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, the Netherlands, Academic MS Center Limburg, Zuyderland Medical Center, Sittard, the Netherlands

Joost Smolders

Current address: Department of Neurology, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands

Affiliation Academic MS Center Limburg, Zuyderland Medical Center, Sittard, the Netherlands

Linda Rolf

Affiliations School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, the Netherlands, Academic MS Center Limburg, Zuyderland Medical Center, Sittard, the Netherlands

Lieke J. J. Klinkenberg

Affiliation Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands

Noreen van der Linden

Affiliation Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands

Steven Meex

Affiliation Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands

Jan Damoiseaux

Affiliation Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht, the Netherlands

Raymond Hupperts

Affiliations School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, the Netherlands, Academic MS Center Limburg, Zuyderland Medical Center, Sittard, the Netherlands

Competing Interests

The authors of this manuscript have read the journal's policy and have the following competing interests: AM, JS, LR, LK, NvdL, SM and JD have declared that no competing interests exist. RH received honoraria for lectures and advisory boards and Research Grants from Merck, Biogen, Sanofi-Genzyme and TEVA. This does not alter the authors’ adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AM JS JD RH. Performed the experiments: AM. Analyzed the data: AM JS LR LK NvdL SM JD RH. Contributed reagents/materials/analysis tools: AM JS LR LK NvdL SM JD RH. Wrote the paper: AM JS LR LK NvdL SM JD RH. Acquisition of data: AM. Drafting manuscript: AM.