@article{ref1,
title="Competitive athletics for children of elementary school age",
journal="Pediatrics",
year="1969",
author="",
volume="44",
number="5",
pages="Suppl:892-4",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0031-4005",
doi="",
url="http://dx.doi.org/"
}