Footnotes

• Contributors M-AD, KS and YO brainstormed the content of the article. M-AD developed the first draft, which was completed by YO and KS. All authors reviewed and approved the final version of the manuscript before submission.

• 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 M-AD has contributed to the development of Option Grid patient decision aids (from which Picture Option Grid is derived). EBSCO Information Services sells subscription access to Option Grid patient decision aids. She receives consulting income from EBSCO Health, and royalties.

• Provenance and peer review Not commissioned; externally peer reviewed.