@article{ref1,
title="Competitive athletics in youth",
journal="Schweizerische Medizinische Wochenschrift",
year="1951",
author="",
volume="81",
number="6",
pages="146-146",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0036-7672",
doi="",
url="http://dx.doi.org/"
}