1 Department of Otolaryngology, Hannover Medical School, Hannover, Hearing Center Hanover (DHZ), Karl-Wiechert-Allee 3, 30625, Hannover, Germany. Electronic address: buechner.andreas@mh-hannover.de.
2 Department of Otolaryngology, Hannover Medical School, Hannover, Hearing Center Hanover (DHZ), Karl-Wiechert-Allee 3, 30625, Hannover, Germany. Electronic address: lesinski-schiedat.anke@mh-hannover.de.
4 Department of Otolaryngology, Hannover Medical School, Hearing Center Hanover (DHZ), Karl-Wiechert-Allee 3, 30625, Hannover, Germany. Electronic address: lenarz.thomas@mh-hannover.de.