@article{ref1,
title="Commentary on: Cohort study on the association between helmet use and traumatic brain injury in snowboarders from a Swiss tertiary trauma center",
journal="World neurosurgery",
year="2015",
author="Stieg, Philip E. and Perrine, Kenneth",
volume="86",
number="",
pages="65-68",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1878-8750",
doi="10.1016/j.wneu.2015.07.044",
url="http://dx.doi.org/10.1016/j.wneu.2015.07.044"
}