Salvatore, M., Floridia, G., Amato, A., Censi, F., de Stefano, M.C., Ferrari, G., Tosto, F., Taruscio, D. and Working Group, I.E.-S. 2017. Italian external quality assessment program for cystic fibrosis sweat chloride test: a 2015 and 2016 results comparison. Annali dell’Istituto Superiore di Sanità. 53, 4 (Dec. 2017), 305–313.