PT - JOURNAL ARTICLE AU - Yousem, David M. TI - A Clear and Present Danger? DP - 2001 Oct 01 TA - American Journal of Neuroradiology PG - 1634--1636 VI - 22 IP - 9 4099 - http://www.ajnr.org/content/22/9/1634.short 4100 - http://www.ajnr.org/content/22/9/1634.full SO - Am. J. Neuroradiol.2001 Oct 01; 22