@article{ref1,
title="Perinatal loss due to external trauma to the uterus",
journal="American journal of obstetrics and gynecology",
year="1964",
author="Parkinson, E. B.",
volume="90",
number="",
pages="30-33",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9378",
doi="",
url="http://dx.doi.org/"
}