@article{ref1,
title="Medical requirements for scuba",
journal="Delaware medical journal",
year="1978",
author="Meckelnburg, R. L.",
volume="50",
number="1",
pages="25-28",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-7781",
doi="",
url="http://dx.doi.org/"
}