@article{ref1,
title="Intoxication by aminopterin used as an abortifacient",
journal="Canadian Medical Association journal",
year="1957",
author="Bourne, F. M. and Freedman, S. O. and Joron, G. E.",
volume="76",
number="6",
pages="473-475",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-4409",
doi="",
url="http://dx.doi.org/"
}