TY - JOUR T1 - Development of the C1–C2 Puncture in Neuroradiology: A Historical Note JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 5 LP - 6 VL - 26 IS - 1 AU - E. Ralph Heinz Y1 - 2005/01/01 UR - http://www.ajnr.org/content/26/1/5.abstract N2 - ER -