Footnotes

• Contributors RPS drafted and revised the paper, and revised the draft Option Grid discussed in the paper. He is guarantor. JK drafted the Option Grid discussed in the paper and revised the draft paper. GE conceived the Option Grid idea, revised the Option Grid discussed in the paper and revised the draft paper. PEMS conceived the paper, revised the draft Option Grid discussed in the paper and revised the draft paper.

• Competing interests We have read and understood the BMJ Group policy on declaration of interests and declare the following interests: RPS: No conflicts of interest to declare. JK: No conflicts of interest to declare. GE: No conflicts of interest to declare. PEMS is co-editor of Practical Neurology.

• Provenance and peer review Commissioned, externally peer reviewed. This paper was reviewed by Mark Manford, Cambridge, UK.