@article{ref1,
title="Osteoporosis",
journal="Italian journal of orthopaedics and traumatology",
year="1975",
author="De Bastiani, G. and Nogarin, L.",
volume="",
number="Suppl 1",
pages="168-174",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0390-5489",
doi="",
url="http://dx.doi.org/"
}