@article{ref1,
title="Requirements for ophthalmological examinations",
journal="Nederlands Tijdschrift voor Geneeskunde",
year="1988",
author="Warmink, H. H. and Crucq, A. J.",
volume="132",
number="11",
pages="508-508",
abstract="<p>[Abstract unavailable]</p><p>Language: nl</p>",
language="nl",
issn="0028-2162",
doi="",
url="http://dx.doi.org/"
}