@article{ref1,
title="Disability in valued life activities among individuals with systemic lupus erythematosus",
journal="Arthritis and rheumatism",
year="2008",
author="Katz, Patricia and Morris, Anne and Trupin, Laura and Yazdany, Jinoos and Yelin, Edward",
volume="59",
number="4",
pages="465-473",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0004-3591",
doi="10.1002/art.23536",
url="http://dx.doi.org/10.1002/art.23536"
}