Expression of hypoxia-associated proteins in sporadic medullary thyroid cancer is associated with desmoplastic stroma reaction and lymph node metastasis and may indicate somatic mutations in the VHL gene - Koperek, O; Bergner, O; Pichlhöfer, B; Oberndorfer, F; Hainfellner, J; Kaserer, K; Horvat, R; Harris, A; Niederle, B; Birner, P (Journal of Pathology, 2011)