@article{ref1,
title="Improving severe traumatic brain injury observational research: not all questions need an RCT",
journal="Journal of Neurosurgical Anesthesiology",
year="2019",
author="Krishnamoorthy, Vijay and Vavilala, Monica S.",
volume="31",
number="2",
pages="173-174",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0898-4921",
doi="10.1097/ANA.0000000000000577",
url="http://dx.doi.org/10.1097/ANA.0000000000000577"
}