@article{ref1,
title="Tolerable risks? Physicians and youth tackle football",
journal="New England journal of medicine",
year="2016",
author="Bachynski, Kathleen E.",
volume="374",
number="5",
pages="405-407",
abstract="<p>[Abstract unavailable]  Keywords: American football</p> <p>Language: en</p>",
language="en",
issn="0028-4793",
doi="10.1056/NEJMp1513993",
url="http://dx.doi.org/10.1056/NEJMp1513993"
}