VEGF-mediated angiogenesis of human pheochromocytomas is associated to malignancy and inhibited by anti-VEGF antibodies in experimental tumors - Zielke, A; Middeke, M; Hoffmann, S; Colombo-Benkmann, M; Barth, P; Hassan, I; Wunderlich, A; Hofbauer, L C; Duh, Q Y (Surgery, 2002)
discussion 1063