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Twitter @wshannon_w, @ScottZeger
Contributors Concept and design: SW and SLZ. Drafting of the manuscript: SW. Critical revision of the manuscript for important intellectual content: SW and SLZ.
Funding National Institutes of Health: 5T32GM007309-42, F30 HL142131-01, 1P30AR070254-01; PCORI ME 1408-20318; Scleroderma Research Foundation 90077243
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
Patient consent for publication Not required.
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