@article{ref1,
title="Subcutaneous perforation of small intestine caused by injury during football game",
journal="Zentralblatt fur Chirurgie",
year="1955",
author="Kratzig, W.",
volume="80",
number="11",
pages="433-435",
abstract="<p>[Abstract unavailable] Keywords: Soccer  </p> <p>Language: de</p>",
language="de",
issn="0044-409X",
doi="",
url="http://dx.doi.org/"
}