CTLA4 alanine-17 confers genetic susceptibility to Graves' disease and to type 1 diabetes mellitus. - Donner,H.; Rau,H.; Walfish,P.G.; Braun,J.; Siegmund,T.; Finke,R.; Usadel,K.H.; Badenhoop,K. (J Clin Endocrinol Metab, 1997)