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We read with great interest the article of Sulheim et al.1 We agree with their conclusion that wearing a helmet while skiing or snowboarding is recommended strongly. We are troubled by the authors' conclusion in their abstract that there was an ‘unexpected reduction in protective effect of a skiing helmet’ when comparing the winter seasons 2002 and 2011. We feel that this wording is misleading, as there was no measure of the physical abilities of helmets in their study. Ski helmets typically …
Contributors All listed authors have significantly contributed to this work to justify authorship.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
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