@article{ref1,
title="The use and abuse of barium meals",
journal="Practitioner",
year="1966",
author="Liebling, P. O.",
volume="196",
number="175",
pages="695-702",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0032-6518",
doi="",
url="http://dx.doi.org/"
}