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Contributors All persons who meet authorship criteria are listed as authors, and all authors certify that they have participated sufficiently in the work to take public responsibility for the content, including participation in the concept, design, analysis, writing, or revision of the manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests NK has received royalties from UpToDate. He also has served as a consultant on the scientific advisory board for Bright Minds Biosciences and received funding for an unrelated investigator-initiated study from Nevro Corporation investigating the use of spinal cord stimulation in painful diabetic neuropathy. IG has received royalties from UpToDate. MAW has received royalties from UpToDate. JKC-G has received royalties from Oxford University Press for the textbook Mayo Clinic Medical Neurosciences. He also serves in a volunteer capacity on the Medical Advisory Board of the Spinal CSF Leak Foundation.
Provenance and peer review Not commissioned; externally peer reviewed.