Fabrice Danjou, Franco Anni, Lucia Perseu, Stefania Satta, Carlo Dessì, Maria Eliana Lai, Paolo Fortina, Marcella Devoto, Renzo Galanello. Genetic modifiers of β-thalassemia and clinical severity as assessed by age at first transfusion. Haematologica 2012;97(7):989-993; https://doi.org/10.3324/haematol.2011.053504.