@article{ref1,
title="The major risk factor",
journal="Medicinskaja Sestra",
year="1986",
author="Lisitsyn, Iu P.",
volume="45",
number="8",
pages="41-45",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0025-8342",
doi="",
url="http://dx.doi.org/"
}