@article{ref1,
title="Invisible children",
journal="Western journal of medicine",
year="1998",
author="Nightingale, E. O. and Hannibal, K.",
volume="169",
number="1",
pages="53-54",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0093-0415",
doi="",
url="http://dx.doi.org/"
}