1. Irish Centre for Genetic Lung Disease, Department of Medicine, and
2. Cystic Fibrosis Unit, Beaumont Hospital, Dublin, Ireland
3. School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland; and
4. Department of Molecular Biology, University Duisburg-Essen, Essen, Germany
5. Division of Biostatistics and Population Health Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland