@article{ref1,
title="Re: "The evaluation of the data collection process for a multicenter, population-based case-control design"",
journal="American journal of epidemiology",
year="1989",
author="Longnecker, M. P.",
volume="129",
number="6",
pages="1311-1312",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9262",
doi="",
url="http://dx.doi.org/"
}