@article{ref1,
title="Head trauma in sports and risk for dementia",
journal="Journal of internal medicine",
year="2019",
author="Winblad, B. and Ankarcrona, M. and Johansson, G. and Novak, P. and Peter Thelin, E. and Zetterberg, H. and Blennow, K.",
volume="285",
number="6",
pages="591-593",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0954-6820",
doi="10.1111/joim.12918",
url="http://dx.doi.org/10.1111/joim.12918"
}