@article{ref1,
title="Chronic traumatic encephalopathy and age of first exposure to American-style football",
journal="Annals of neurology",
year="2018",
author="Pascual-Leone, Alvaro and Zafonte, Ross D.",
volume="83",
number="5",
pages="884-885",
abstract="<p>[Abstract unavailable]  Keywords: American football </p> <p>Language: en</p>",
language="en",
issn="0364-5134",
doi="10.1002/ana.25258",
url="http://dx.doi.org/10.1002/ana.25258"
}