Mutations in the SDHB gene are associated with extra-adrenal and/or malignant phaeochromocytomas - Gimenez-Roqueplo, A P; Favier, J; Rustin, P; Rieubland, C; Crespin, M; Nau, V; Khau Van Kien, P; Corvol, P; Plouin, P F; Jeunemaitre, X (Cancer Res, 2003)