@article{ref1,
title="Traumatic premature separation of placenta. Report of a case",
journal="Annales chirurgiae et gynaecologiae Fenniae",
year="1974",
author="Punnonen, R.",
volume="63",
number="6",
pages="487-488",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-3855",
doi="",
url="http://dx.doi.org/"
}