McColley, Susanna A Sorting out the gray zone: Cystic fibrosis newborn screening. [electronic resource] - Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society Nov 2015 - 681-2 p. digital Publication Type: Editorial; Comment ISSN: 1873-5010 Standard No.: 10.1016/j.jcf.2015.10.003 doi Subjects--Topical Terms: Cystic Fibrosis--diagnosisHumansInfant, NewbornNeonatal Screening