@article{ref1,
title="Genital bleeding during childhood",
journal="Pediatric annals",
year="1981",
author="Widholm, O.",
volume="10",
number="5",
pages="16-28",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-4481",
doi="",
url="http://dx.doi.org/"
}