1. Department of Otolaryngology – Head and Neck Surgery, Oregon Health & Science University, Portland, OR, USA,
2. VA Portland Health Care System, VA RR&D Center of Excellence, National Center for Rehabilitative Auditory Research, Portland, OR, USA,
3. Division of Pulmonary and Critical Care Medicine Adult Cystic Fibrosis Program, Oregon Health & Science University, Portland, OR, USA,
4. Department of Pediatrics Pulmonary Medicine, Oregon Health & Science University, Portland, OR, USA,
5. National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA,
6. Department of Medicine, Hematology & Oncology, Oregon Health & Science University, Portland, OR, USA, and
7. Department of Medicine, Hematology & Oncology, University of Rochester, Rochester, NY, USA