@article{ref1,
title="The medical hazards of underwater swimming",
journal="Practitioner",
year="1962",
author="Davies, W.",
volume="188",
number="",
pages="656-660",
abstract="unavailable.  Keywords: Drowning; Drowning Prevention; Water Safety",
language="en",
issn="0032-6518",
doi="",
url="http://dx.doi.org/"
}