@article{ref1,
title="Causes of sudden death in infants",
journal="Polski Tygodnik Lekarski",
year="1973",
author="Lachmajer, M. and Dziedzic-Witkowska, T.",
volume="28",
number="29",
pages="1122-1125",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0032-3756",
doi="",
url="http://dx.doi.org/"
}