PT - JOURNAL ARTICLE AU - Robert I. Grossman TI - Transitions DP - 2006 Jan 01 TA - American Journal of Neuroradiology PG - 1--1 VI - 27 IP - 1 4099 - http://www.ajnr.org/content/27/1/1.1.short 4100 - http://www.ajnr.org/content/27/1/1.1.full SO - Am. J. Neuroradiol.2006 Jan 01; 27