@article{ref1,
title="Transient amenorrhea after closed head trauma",
journal="New England journal of medicine",
year="1986",
author="Cytowic, R. E. and Smith, Alastair and Stump, D. A.",
volume="314",
number="11",
pages="715-715",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}