Fx-263 simpson
23 Apr 2014 However, Simpson grade I removal is sometimes difficult, especially in cases with ventral dural The number of patients in Simpson grades I, II, III, and IV were 2, 8, 0, and 3, respectively;.. 11) Roux FX, Nataf F, Pinaudeau M, Borne G, Devaux B, Meder JF: Intraspinal J Neurosurg 98: 258– 263, 2003.