@article{ref1,
title="Ragnar Berfenstam's legacy",
journal="Injury prevention",
year="2000",
author="Bergman, A. B.",
volume="6",
number="1",
pages="4-4",
abstract="Abstract unavailable.",
language="en",
issn="1353-8047",
doi="",
url="http://dx.doi.org/"
}