@article{ref1,
title="Letter: Costs and problems of de-leading",
journal="New England journal of medicine",
year="1973",
author="Tobin, K. N.",
volume="289",
number="21",
pages="1150-1150",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="10.1056/NEJM197311222892123",
url="http://dx.doi.org/10.1056/NEJM197311222892123"
}