@article{ref1,
title="Anatomy of backpack-strap injury",
journal="New England journal of medicine",
year="1981",
author="Johnson, R. J.",
volume="305",
number="26",
pages="1594-1594",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="10.1056/NEJM198112243052624",
url="http://dx.doi.org/10.1056/NEJM198112243052624"
}