@article{ref1,
title="Urban-rural health differences",
journal="Journal of public health medicine",
year="1993",
author="Birt, C. A.",
volume="15",
number="2",
pages="213-214",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0957-4832",
doi="",
url="http://dx.doi.org/"
}