@article{ref1,
title="Antecedents of school problems in children born preterm",
journal="Journal of pediatric psychology",
year="1988",
author="Cohen, S. E. and Parmelee, A. H. and Sigman, M. and Beckwith, L.",
volume="13",
number="4",
pages="493-507",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0146-8693",
doi="",
url="http://dx.doi.org/"
}