@article{ref1,
title="Twins and child abuse",
journal="Archives of pediatrics and adolescent medicine",
year="1994",
author="Hansen, K. K.",
volume="148",
number="12",
pages="1345-1346",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1072-4710",
doi="",
url="http://dx.doi.org/"
}