@article{ref1,
title="Etiological factors in first-degree murder",
journal="Journal of the American Medical Association",
year="1958",
author="Duncan, G. M. and Frazier, S. H. and Litin, E. M. and Johnson, Amy M. and Barron, A. J.",
volume="168",
number="13",
pages="1755-1758",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9955",
doi="",
url="http://dx.doi.org/"
}