@article{ref1,
title="Letter: Alcohol intake in South African white middle-aged males",
journal="South African medical journal SAMJ",
year="1975",
author="Walker, A. R.",
volume="49",
number="16",
pages="649-650",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0038-2469",
doi="",
url="http://dx.doi.org/"
}