TY - JOUR T1 - Training and Learning Curve in Chronic Cerebrospinal Venous Insufficiency Assessment JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - E69 LP - E69 DO - 10.3174/ajnr.A3570 VL - 34 IS - 6 AU - P.M. Bavera Y1 - 2013/06/01 UR - http://www.ajnr.org/content/34/6/E69.abstract N2 - ER -