@article{ref1,
title="Letter: Fitness for diving",
journal="British medical journal: BMJ",
year="1976",
author="Elliott, D. H. and Pearson, R. R.",
volume="2",
number="6031",
pages="369-369",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}