About the Authors

Karin van der Hiele

Contributed equally to this work with: Karin van der Hiele, Dennis van Gorp

hiele@fsw.leidenuniv.nl

Affiliations National MS Foundation, Maassluis, The Netherlands, Department of Psychology, Section Health, Medical and Neuropsychology, Leiden University, Leiden, The Netherlands, Department of Neurology, St. Elisabeth Hospital, Tilburg, The Netherlands

Dennis van Gorp

Contributed equally to this work with: Karin van der Hiele, Dennis van Gorp

Affiliations National MS Foundation, Maassluis, The Netherlands, Department of Psychology, Section Health, Medical and Neuropsychology, Leiden University, Leiden, The Netherlands, Department of Neurology, St. Elisabeth Hospital, Tilburg, The Netherlands, University of Humanistic Studies, Utrecht, The Netherlands

Rob Ruimschotel

‡ These authors also contributed equally to this work.

Affiliation Medical Psychiatric Centre PsyToBe, Rotterdam, The Netherlands

Noëlle Kamminga

‡ These authors also contributed equally to this work.

Affiliation Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands

Leo Visser

‡ These authors also contributed equally to this work.

Affiliations Department of Neurology, St. Elisabeth Hospital, Tilburg, The Netherlands, University of Humanistic Studies, Utrecht, The Netherlands

Huub Middelkoop

‡ These authors also contributed equally to this work.

Affiliations Department of Psychology, Section Health, Medical and Neuropsychology, Leiden University, Leiden, The Netherlands, Department of Neurology, Leiden University Medical Centre, Leiden, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KH RR NK LV HM. Performed the experiments: KH RR NK LV. Analyzed the data: KH DG. Wrote the paper: KH DG RR NK LV HM.