@article{ref1,
title="Psychobiological methodology",
journal="Journal of the American Academy of Child and Adolescent Psychiatry",
year="1992",
author="Ryan, Neal D. and Iyengar, Satish and Perel, J. M. and Kaufman, Joan and Dahl, R. E. and Birmaher, B.",
volume="31",
number="4",
pages="752-755",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0890-8567",
doi="",
url="http://dx.doi.org/"
}