@article{ref1,
title="The prevalence and extent of drinking in Iowa, 1979",
journal="Journal of studies on alcohol",
year="1981",
author="Skog, O. J.",
volume="42",
number="7",
pages="689-696",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-882X",
doi="",
url="http://dx.doi.org/"
}