1. Medical Faculty of the Albert-Ludwigs-University Freiburg, Freiburg Institute for Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Elsässer Straße 2m, 79110, Freiburg, Germany
2. Institute of Acoustics and Speech Communication, Technische Universität Dresden, Germany
3. Department of Medical Physics, Radiology, Freiburg University Medical Center, Germany
4. Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
5. Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, University Hospital, LMU Munich, Germany