Letter to the Editor. Validating the 5-factor modified frailty index

Michael T. C. Poon MBChB, MSc, MRCS(Ed)
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  • 1 Usher Institute, University of Edinburgh, United Kingdom
  • 2 Royal Infirmary of Edinburgh, United Kingdom
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Contributor Notes

Correspondence Michael T. C. Poon: mpoon@ed.ac.uk.

INCLUDE WHEN CITING Published online November 13, 2020; DOI: 10.3171/2020.8.JNS203241.

Disclosures The author reports no conflict of interest.

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