@article{ref1,
title="Abuse of laxatives",
journal="Tijdschrift Voor Gastro-Enterologie",
year="1976",
author="Rutgeerts, L. and Tanghe, W. and Tytgat, G.",
volume="19",
number="4",
pages="281-293",
abstract="<p>[Abstract unavailable]</p><p>Language: nl</p>",
language="nl",
issn="0049-3899",
doi="",
url="http://dx.doi.org/"
}