@article{ref1,
title="Drinking and problem drinking in early adulthood and middle age: An exploratory 20-year follow-up study",
journal="Quarterly journal of studies on alcohol",
year="1974",
author="Fillmore, K. M.",
volume="35",
number="3",
pages="819-840",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0033-5649",
doi="",
url="http://dx.doi.org/"
}