Two novel nonsense mutations of the fibroblast growth factor 8 in patients with congenital isolated hypogonadotropic hypogonadism - Trarbach, E. B.; Abreu, A. P.; Costa, E. M. F.; Teles, M.; Guerra Júnior, G.; Baptista, M. T. M.; Garmes, H. M.; Castro, Margaret de; Mendonça, Berenice Bilharinho de; Latronico, A. C. (Annual Meeting of the Endocrine Society, 2008)