@article{ref1,
title="Testosterone level may be a "marker" of conflict behavior in male and female preschool children",
journal="Aggressive behavior",
year="2001",
author="Sanchez-Martin, Jose R. and Fano, E. and Cardas, J and Ahedo, L and Brain, Paul F. and Azpiroz, A.",
volume="27",
number="3",
pages="219-220",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}