@article{ref1,
title="The effects of smoking bans on extended care units at state psychiatric hospitals",
journal="Hospital and community psychiatry",
year="1993",
author="Parks, J. J. and Devine, D. D.",
volume="44",
number="9",
pages="885-886",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1597",
doi="",
url="http://dx.doi.org/"
}