@article{ref1,
title="A follow-up study of injuries to permanent and primary teeth in children",
journal="Proceedings of the Finnish Dental Society",
year="1976",
author="Haavikko, K. and Rantanen, L.",
volume="72",
number="5",
pages="152-162",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0039-551X",
doi="",
url="http://dx.doi.org/"
}