@article{ref1,
title="Differences in soccer heading injuries between male and female soccer players may be due to equal ball weight causing differences in relative impacts",
journal="Radiology",
year="2019",
author="Pedersen, Arve Vorland and Stalsberg, Ragna",
volume="290",
number="2",
pages="579-580",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0033-8419",
doi="10.1148/radiol.2018182384",
url="http://dx.doi.org/10.1148/radiol.2018182384"
}