Hyperparathyroidism-jaw tumor syndrome in Roma families from Portugal is due to a founder mutation of the HRPT2 gene. - Cavaco,B.M.; Guerra,L.; Bradley,K.J.; Cavalho,D.; Harding,B.; Oliveira,A.; Santos,M.A.; Sobrinho,L.G.; Thakker,R.V.; Leite,V. (J Clin Endocrinol Metab, 2004)