G D’Andrea, P Di Perna, V Brancaccio, EM Faioni, G Castaman, G Cibelli, G Di Minno, M Margaglione, Protein S Italian Team. A novel G-to-A mutation in the intron-N of the protein S gene leading to abnormal RNA splicing in a patient with protein S deficiency. Haematologica 2003;88(4):459-464; https://doi.org/10.3324/%x.