@article{ref1,
title="Perirenal hematoma following judo training",
journal="New York state journal of medicine",
year="1988",
author="Fujita, S. and Kusunoki, M. and Yamamura, T. and Utsunomiya, J.",
volume="88",
number="1",
pages="33-34",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-7628",
doi="",
url="http://dx.doi.org/"
}