@article{ref1,
title="The preventive medicine program of the United States Army",
journal="American journal of public health",
year="1943",
author="Simmons, JS",
volume="33",
number="8",
pages="931-940",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}