PT - JOURNAL ARTICLE AU - S.-C. Hung AU - H.-M. Wu AU - W.-Y. Guo TI - Revisiting Anterior Atlantoaxial Subluxation with Overlooked Information on MR Images AID - 10.3174/ajnr.A1941 DP - 2009 Dec 31 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2009/12/31/ajnr.A1941.short 4100 - http://www.ajnr.org/content/early/2009/12/31/ajnr.A1941.full