Mutations and polymorphisms in the SDHB, SDHD, VHL, and RET genes in sporadic and familial pheochromocytomas - Waldmann, J; Langer, P; Habbe, N; Fendrich, V; Ramaswamy, A; Rothmund, M; Bartsch, D K; Slater, E P (Endocrine, 2009)