Expression of Ki-67, p53 and vascular endothelial growth factor (VEGF) concomitantly in growth hormone-secreting pituitary adenomas; which one has a role in tumor behavior? - Yarman, S; Kurtulmus, N; Canbolat, A; Bayindir, C; Bilgic, B; Ince, N (Neuroendocrinol Lett, 2010)