1 Department of Phoniatrics and Pediatric Audiology, Clinic of Otorhinolaryngology, Head and Neck Surgery, St. Elisabeth-Hospital, Ruhr University Bochum, Bleichstr. 16, 44787 Bochum, Germany. Electronic address: Katrin.Neumann@ruhr-uni-bochum.de.
2 Brain Institute of Louisiana, Department of Communication Sciences and Disorders, 74 Hatcher Hall, Louisiana State University, Baton Rouge, LA 70803, United States.