@article{ref1,
title="Fracture of the sacrum in a child",
journal="Journal of bone and joint surgery: American volume",
year="1978",
author="Heckman, J. D. and Keats, P. K.",
volume="60",
number="3",
pages="404-405",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9355",
doi="",
url="http://dx.doi.org/"
}