@article{ref1,
title="Problems in studying the prevalence of psychiatric disorder",
journal="American journal of public health",
year="1967",
author="Lapouse, R.",
volume="57",
number="6",
pages="947-954",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}