@article{ref1,
title="Years of potential life lost before age 65 - United States, 1990 and 1991",
journal="JAMA journal of the American Medical Association",
year="1993",
author="",
volume="269",
number="22",
pages="e2842-e2842",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0098-7484",
doi="10.1001/jama.269.22.2842",
url="http://dx.doi.org/10.1001/jama.269.22.2842"
}