@article{ref1,
title="Formal swimming lessons must be defined",
journal="Archives of pediatrics and adolescent medicine",
year="2009",
author="Carr, William David",
volume="163",
number="10",
pages="961-2; author reply 962",
abstract="<p>[Abstract unavailable]  Keywords: Drowning; Drowning Prevention; Water Safety </p> <p>Language: en</p>",
language="en",
issn="1072-4710",
doi="10.1001/archpediatrics.2009.184",
url="http://dx.doi.org/10.1001/archpediatrics.2009.184"
}