@article{ref1,
title="A case of ventricular septal defect due to nonpenetrating injury",
journal="Kyobu Geka",
year="1987",
author="Murotani, A. and Shida, T. and Chihara, H. and Nakamura, K. and Nagata, K.",
volume="40",
number="2",
pages="159-161",
abstract="<p>[Abstract unavailable]</p><p>Language: ja</p>",
language="ja",
issn="0021-5252",
doi="",
url="http://dx.doi.org/"
}