@article{ref1,
title="Prevention of hip joint fractures in the elderly using an external hip protector",
journal="Unfallchirurg",
year="2001",
author="Mau, H.",
volume="104",
number="6",
pages="557-558",
abstract="Abstract unavailable.",
language="",
issn="0177-5537",
doi="",
url="http://dx.doi.org/"
}