Barbiero C, Lonciari I, Montico M, Monasta L, Penge R, Vio C, Tressoldi PEmanuele, Ferluga V, Bigoni A, Tullio A, Carrozzi M, Ronfani L. The submerged dyslexia iceberg: how many school children are not diagnosed? Results from an Italian study. PLoS One 2012;7(10):e48082.