@article{ref1,
title="Physical abuse of children",
journal="Pediatrics",
year="1970",
author="Helfer, R. E. and Gil, D. G.",
volume="46",
number="4",
pages="651-2 concl",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0031-4005",
doi="",
url="http://dx.doi.org/"
}