**Author details**

Mary Hägg1,2\* and Thomas Franzén3 \*

1 Department of Otorhinolaryngology, Speech and Swallowing Centre, Hudiksvall Hospital, Sweden

2 Centre for Research and Development, Uppsala University/Region Gävleborg, Sweden

3 Department of Surgery and Department of Clinical and Experimental Medicine, Linköping University, Norrköping, Sweden

\*Address all correspondence to: mary.hagg@regiongavleborg.se; mary@myoroface.com; thomas.franzen@regionostergotland.se

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
