@article{ref1,
title="A comparison of the mortality rates of various population groups in South Africa",
journal="South African medical journal SAMJ",
year="1979",
author="Zwi, Anthony B.",
volume="56",
number="11",
pages="424-424",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0038-2469",
doi="",
url="http://dx.doi.org/"
}