@article{ref1,
title="Territorial differences in the level of morbidity in the GDR",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1979",
author="Lorenz, R. and Mietzelfeldt, M.",
volume="25",
number="8",
pages="615-618",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}