@article{ref1,
title="Risks in underwater swimming",
journal="Il Policlinico. Sezione Pratica",
year="1970",
author="Chirone, E.",
volume="77",
number="27",
pages="891-896",
abstract="<p>[Abstract unavailable]  Keywords: Drowning; Drowning Prevention; Water Safety </p> <p>Language: it</p>",
language="it",
issn="0032-2644",
doi="",
url="http://dx.doi.org/"
}