Article Text
Editorial
Considerations for conducting and interpreting long-term follow-up of intervention studies: avoiding spoiled milk
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Footnotes
Contributors IS wrote the first draft; CIB made the figure. IS and CIB contributed to subsequent drafts and figures and approved the version submitted.
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 None declared.
Provenance and peer review Commissioned; externally peer reviewed.