@article{ref1,
title="Penetrating brain injury caused by retained plastic tip of ballpoint pen",
journal="Pediatric neurosurgery",
year="2012",
author="Koyanagi, Masaomi and Sakai, Nobuyuki and Adachi, Hidemitsu and Ueno, Yasushi and Kunieda, Takeharu and Imamura, Hirotoshi and Kikuchi, Haruhiko",
volume="47",
number="6",
pages="462-463",
abstract="No abstract available.<p /> <p>Language: en</p>",
language="en",
issn="1016-2291",
doi="10.1159/000339210",
url="http://dx.doi.org/10.1159/000339210"
}