About the Authors

Renske I. Wadman

R.I.Wadman@umcutrecht.nl (RIW); W.L.vanderPol@umcutrecht.nl (WLP)

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Marloes Stam

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Marc D. Jansen

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Yana van der Weegen

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Camiel A. Wijngaarde

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Oliver Harschnitz

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Peter Sodaar

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Kees P. J. Braun

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Child Neurology, University Medical Centre Utrecht, Utrecht, The Netherlands

Dennis Dooijes

Affiliation Department of Genetics, University Medical Centre Utrecht, Utrecht, The Netherlands

Henny H. Lemmink

Affiliation Department of Genetics, University Medical Centre Groningen, Groningen, The Netherlands

Leonard H. van den Berg

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

W. Ludo van der Pol

R.I.Wadman@umcutrecht.nl (RIW); W.L.vanderPol@umcutrecht.nl (WLP)

Affiliation Brain Centre Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands

Competing Interests

L. H. van den Berg serves on scientific advisory boards for the Prinses Beatrix Spierfonds, Thierry Latran Foundation, Biogen Idec and Cytokinetics; received an educational grant from Baxter International Inc.; serves on the editorial board of Amyotrophic Lateral Sclerosis and the Journal of Neurology, Neurosurgery and Psychiatry; and receives research support from the Prinses Beatrix Fonds, Netherlands ALS Foundation, The European Community's Health Seventh Framework Programme (grant agreement n° 259867), The Netherlands Organization for Health Research and Development (Vici Scheme, JPND (SOPHIA, STRENGTH)). W. L. van der Pol receives research support from the Prinses Beatrix Spierfonds, Netherlands ALS Foundation and Stichting Spieren voor Spieren. This does not alter our adherence to PLOS ONE policies on sharing data and materials. All other authors have declared that no competing interests exist.

Author Contributions

Conceptualization: RIW LHB WLP. Data curation: RIW MS MDJ YW CAW OH DD LHB WLP. Formal analysis: RIW DD HHL LHB WLP. Funding acquisition: LHB WLP. Investigation: RIW MS MDJ YW CAW OH HHL DD LHB WLP PS. Methodology: RIW LHB WLP. Project administration: RIW LHB WLP. Resources: MDJ DD HHL LHB WLP. Supervision: LHB WLP. Visualization: RIW WLP. Writing – original draft: RIW WLP. Writing – review & editing: RIW MS MDJ YW CAW OH KPB DD HHL LHB WLP PS.