Cystic Fibrosis Newborn Screening in Austria Using PAP and the Numeric Product of PAP and IRT Concentrations as Second-Tier Parameters oleh Maximilian Zeyda, Andrea Schanzer, Pavel Basek, Vera Bauer, Ernst Eber, Helmut Ellemunter, Margit Kallinger, Josef Riedler, Christina Thir, Franz Wadlegger, Angela Zacharasiewicz, Sabine Renner