@article{ref1,
title="Unsafe and understudied: the US gun problem",
journal="BMJ",
year="2016",
author="Winker, Margaret A. and Abbasi, Kamran and Rivara, Frederick P.",
volume="352",
number="",
pages="i578-i578",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-535X",
doi="",
url="http://dx.doi.org/"
}