Jan Boucek
Department of ENT and HNS, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands, H.Kunst@kno.umcn.nl
Bas Staffhorst
Department of ENT and HNS, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
André Grotenhuis
Department of Neurosurgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands,
Henricus P.M. Kunst
Department of Otorhinolaryngology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands