@article{ref1,
title="Swimming--the hazards of taking a dip",
journal="British medical journal: BMJ",
year="1992",
author="Walker, A.",
volume="304",
number="6821",
pages="242-245",
abstract="<p>[Abstract unavailable]  Keywords: Drowning; Drowning Prevention; Water Safety </p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}