@article{ref1,
title="The many faces of survivor bias in observational studies on trauma resuscitation requiring massive transfusion",
journal="Annals of emergency medicine",
year="2015",
author="Ho, Anthony M-H and Zamora, Jorge E. and Holcomb, John B. and Ng, Calvin S. H. and Karmakar, Manoj K. and Dion, Peter W.",
volume="66",
number="1",
pages="45-48",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0196-0644",
doi="10.1016/j.annemergmed.2014.12.030",
url="http://dx.doi.org/10.1016/j.annemergmed.2014.12.030"
}