Received: 14 March 2018
Accepted: 13 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: Data was collected prospectively as a quality improvement project within our center’s cystic fibrosis clinic. The University of Washington’s Human Subjects Division approved retrospective data review for the study without patient consent.
: The University of Washington’s Human Subjects Division approved publication without patient consent.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.