@article{ref1,
title="Banning heading in soccer would have limited effect on concussions, study finds",
journal="BMJ",
year="2015",
author="Wise, Jacqui",
volume="351",
number="",
pages="h3789-h3789",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-535X",
doi="",
url="http://dx.doi.org/"
}