@article{ref1,
title="Modeling health impacts of the transportation built environment: challenges and opportunities",
journal="Journal of environmental health",
year="2015",
author="Whitfield, Geoffrey P. and Wendel, Arthur M.",
volume="77",
number="7",
pages="36-37",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0022-0892",
doi="",
url="http://dx.doi.org/"
}