@article{ref1,
title="Coitus as trauma causing rupture of the menstrual corpus luteum with massive intravisceral hemorrhage",
journal="Przeglad Lekarski",
year="1970",
author="Madej, J. and Urbańczyk, C. and Marczyński, K.",
volume="26",
number="2",
pages="327-328",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0033-2240",
doi="",
url="http://dx.doi.org/"
}