@article{ref1,
title="Analysis of rates in selected countries, specific for age and sex",
journal="International journal of social psychiatry",
year="1972",
author="Burvill, P. W.",
volume="18",
number="2",
pages="137-139",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0020-7640",
doi="",
url="http://dx.doi.org/"
}