@article{ref1,
title="Prevention of birth injuries",
journal="Clinical obstetrics and gynecology",
year="2007",
author="Gilbert, William M.",
volume="50",
number="3",
pages="561-562",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0009-9201",
doi="10.1097/GRF.0b013e31811ea758",
url="http://dx.doi.org/10.1097/GRF.0b013e31811ea758"
}