@article{ref1,
title="Prevention, treatment, and prognosis for nerve injury related to the difficult impaction",
journal="Dental clinics of North America",
year="1979",
author="Merrill, R. G.",
volume="23",
number="3",
pages="471-488",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-8532",
doi="",
url="http://dx.doi.org/"
}