A new hot spot for mutations in the ret protooncogene causing familial medullary thyroid carcinoma and multiple endocrine neoplasia type 2A. - Berndt,I.; Reuter,M.; Saller,B.; Frank-Raue,K.; Groth,P.; Grussendorf,M.; Raue,F.; Ritter,M.M.; Hoppner,W. (J Clin Endocrinol Metab, 1998)