@article{ref1,
title="Reassurance and short period of bed rest in the treatment of concussion; follow-up and comparison with results in other series treated by prolonged bed rest",
journal="Acta medica Scandinavica",
year="1957",
author="Andreassen, J. and Bach-nielsen, P. and Heckscher, H. and Lindeneg, O.",
volume="158",
number="3-4",
pages="239-248",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6101",
doi="",
url="http://dx.doi.org/"
}