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Contributors JST and JD developed the editorial idea. JST composed the initial draft. All authors contributed to further content development, writing and final approval of the manuscript.
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 JD is Editor-In-Chief, and JST, JD, JP and LE are Editors for BJSM. LE is Head of Medical Sciences at the IOC.
Provenance and peer review Not commissioned; internally peer reviewed.
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