Cystic Fibrosis Cases Missed by Newborn Bloodspot Screening—Towards a Consistent Definition and Data Acquisition oleh Anne Munck, Kevin W. Southern, Jared Murphy, Karin M. de Winter-de Groot, Silvia Gartner, Bülent Karadag, Nataliya Kashirskaya, Barry Linnane, Marijke Proesmans, Dorota Sands, Olaf Sommerburg, Carlo Castellani, Jürg Barben