1. Comprehensive Pneumology Center, German Center for Lung Research, Munich, Germany;
2. Institute of Lung Biology and Disease, Helmholtz Zentrum München–German Research Center for Environmental Health, Neuherberg, Germany;
3. Fisher & Paykel Healthcare, Auckland, New Zealand;
4. HELIOS Klinik Hagen-Ambrock, Witten-Herdecke University, Hagen, Germany;
5. Department of Nuclear Medicine, LMU Medical Center Grosshadern, Munich, Germany;
6. Department of Otolaryngology, Head and Neck Surgery, LMU Medical Center Grosshadern, Munich, Germany;
7. Department of Nuclear Medicine, Asklepios Fachkliniken München-Gauting, Gauting, Germany; and
8. University Hospital of the Ludwig Maximilian University, Munich, Germany