@article{ref1,
title="Crowding and health",
journal="Journal of health and social behavior",
year="1976",
author="Booth, A. and Cowell, J.",
volume="17",
number="3",
pages="204-220",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1465",
doi="",
url="http://dx.doi.org/"
}