Footnotes

• Twitter @ashwin_b_gupta, @nate_houchens

• 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 AG is supported by grant funding from the Moore Foundation, the Society to Improve Diagnosis in Medicine, and the Pepper Center. Both NH and AG are employees of the Veterans Affairs Healthcare System.

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