Guida V, Cappabianca M, Colosimo A, Rafanelli F, Amato A, Dallapiccola B. Influence of Ggamma-158C --> and beta- (AT)x(T)y globin gene polymorphisms on HbF levels in Italian beta-thalassemia carriers and wild-type subjects. Haematologica 2006; 91(9):1275-1276.