@article{ref1,
title="The etiology of child abuse",
journal="Pediatrics",
year="1973",
author="Helfer, R. M.",
volume="51",
number="",
pages="Suppl 4:777-9",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-4005",
doi="",
url="http://dx.doi.org/"
}