@article{ref1,
title="Danger of chewing gum while participating in a sport",
journal="South African medical journal SAMJ",
year="1991",
author="Siroka, S. A. and Knobel, G. J.",
volume="79",
number="9",
pages="565-566",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0038-2469",
doi="",
url="http://dx.doi.org/"
}