About the Authors

James E. Hazelwood

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliations Edinburgh Spinal Surgery Outcomes Study Group, Edinburgh, United Kingdom, Chelsea and Westminster Hospital, London, United Kingdom

Ingrid Hoeritzauer

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – review & editing

Affiliations Edinburgh Spinal Surgery Outcomes Study Group, Edinburgh, United Kingdom, Department of Clinical Neurosciences (Neurology), Royal Infirmary of Edinburgh, Little France, Edinburgh, Scotland, United Kingdom, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom

Alan Carson

Roles Data curation, Formal analysis, Methodology, Supervision, Validation, Visualization, Writing – review & editing

Affiliations Department of Clinical Neurosciences (Neurology), Royal Infirmary of Edinburgh, Little France, Edinburgh, Scotland, United Kingdom, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom, Department of Rehabilitation Medicine, NHS Lothian, Edinburgh, United Kingdom

Jon Stone

Roles Conceptualization, Data curation, Formal analysis, Methodology, Supervision, Validation, Visualization, Writing – review & editing

Affiliations Department of Clinical Neurosciences (Neurology), Royal Infirmary of Edinburgh, Little France, Edinburgh, Scotland, United Kingdom, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom

Andreas K. Demetriades

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Supervision, Validation, Writing – review & editing

andreas.demetriades@gmail.com

Affiliations Edinburgh Spinal Surgery Outcomes Study Group, Edinburgh, United Kingdom, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom, Department of Clinical Neurosciences (Neurosurgery), Royal Infirmary of Edinburgh, Little France, Edinburgh, Scotland, United Kingdom

Competing Interests

JEH, IH and AKD report no disclosures relevant to the manuscript. AC reports that he is a Paid associate editor of JNNP, unpaid treasurer of Functional Neurological Disorder Society and gives paid testimony in court on a range of Neuropsychiatric conditions. JS reports independent expert testimony work for personal injury and medical negligence claims, royalties from UpToDate for articles on functional neurological disorder, is unpaid secretary of the Functional Neurological Disorder Society and runs a free non-profit self-help website for FND, https://www.neurosymptoms.org/en_US/. This does not alter our adherence to PLOS ONE policies on sharing data and materials.