@article{ref1,
title="Declaration of Tokyo: guidelines for medical doctors",
journal="World medical journal",
year="1975",
author="",
volume="22",
number="6",
pages="87+-87+",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0049-8122",
doi="",
url="http://dx.doi.org/"
}