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▸ Additional supplementary files are published online only. To view these files please visit the journal online (http://dx.doi.org/10.1136/jnnp-2012-303795).
Contributors ALRR: Writing and preparation of the manuscript. WK: review and critique of the manuscript. AO: review and critique of the manuscript. GNF: review and critique of the manuscript. Overall responsibility for clinical care.
Funding statement None.
Competing interests ALRR, WK and AO declare no competing interests. GNF received royalties from books—Neurological Examination made Easy, Neurology Colour and Illustrated Textm Neurology and Neurosurgery illustrated, is a co-editor for the journal Practical Neurology and is a BMJ Masterclass lecturer.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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