@article{ref1,
title="Two problems in the causes of death",
journal="Postgraduate medicine",
year="1961",
author="Shapiro, H. A.",
volume="30",
number="",
pages="A42-A50",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0032-5481",
doi="",
url="http://dx.doi.org/"
}