@article{ref1,
title="Use of psychoactive substances and risky behavior",
journal="Revista de saude publica",
year="2009",
author="Lima, Maria Cristina Pereira and Correa, Florence Kerr and Sansigolo, Ligia Regina Franco",
volume="43",
number="1",
pages="196-7; author reply 197",
abstract="<p>[Abstract unavailable]</p> <p>Language: pt</p>",
language="pt",
issn="0034-8910",
doi="",
url="http://dx.doi.org/"
}