@article{ref1,
title="Maternal perinatal risk factors and child abuse",
journal="Child abuse and neglect",
year="1987",
author="Lewis, E.",
volume="11",
number="4",
pages="589-590",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0145-2134",
doi="",
url="http://dx.doi.org/"
}