@article{ref1,
title="Removal of razor blades from stomach with fibreoptic endoscope",
journal="British medical journal: BMJ",
year="1974",
author="Witzel, L. and Scheurer, U. and Mühlemann, A. and Halter, F.",
volume="2",
number="5918",
pages="539-539",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}