@article{ref1,
title="Popular marathons: forecasting casualties",
journal="British medical journal (clinical research edition)",
year="1983",
author="",
volume="286",
number="6360",
pages="223-223",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0267-0623",
doi="",
url="http://dx.doi.org/"
}