1. Institute of Mechatronic Systems, Leibniz Universität Hannover, 30823 Garbsen, Germany
2. Department of Phoniatrics and Pediatric Audiology, Hannover Medical School, 30625 Hannover, Germany
3. Centre for Image Guided Innovation and Therapeutic Intervention (CIGITI), The Hospital for Sick Children, Toronto Ontario M5G 1X8, Canada
4. Department of Mathematical and Computational Sciences, University of Toronto Mississauga, Mississauga Ontario L5L 1C6, Canada