PT - JOURNAL ARTICLE ED - , TI - Erratum DP - 1981 Jan 01 TA - American Journal of Neuroradiology PG - 36--36 VI - 2 IP - 1 4099 - http://www.ajnr.org/content/2/1/36.short 4100 - http://www.ajnr.org/content/2/1/36.full SO - Am. J. Neuroradiol.1981 Jan 01; 2