@article{ref1,
title="Nonprescription Use of Pain Relievers by Middle‐Aged and Elderly Community‐Living Adults: National Survey on Drug Use and Health",
journal="Journal of the American Geriatrics Society",
year="2009",
author="Blazer, Dan G. and Wu, Li‐Tzy",
volume="57",
number="7",
pages="1252-1257",
abstract="OBJECTIVES:  To estimate the frequency, distribution, and correlates of nonprescription use of pain relievers by middle-aged and elderly persons in the United States.<p />",
language="",
issn="0002-8614",
doi="10.1111/j.1532-5415.2009.02306.x",
url="http://dx.doi.org/10.1111/j.1532-5415.2009.02306.x"
}