@article{ref1,
title="Traumatized permanent teeth in children aged 7-15 years",
journal="Svensk Tandläkare Tidskrift",
year="1975",
author="Stålhane, I. and Hedegård, B.",
volume="68",
number="5",
pages="157-169",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0039-6745",
doi="",
url="http://dx.doi.org/"
}