Affiliation: | 2. University College of Music Education, Stockholm, Sweden;2. Speech and Voice Research Laboratory, Faculty of Education, University of Tampere, Tampere, Finland;3. Ear and Oral Diseases, Department of Phoniatrics, Tampere University Hospital, Tampere, Finland;4. Department of Otorhinolaryngology and Phoniatrics—Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland |