title: Reply.
authors.affiliation: Division for Vascular Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
authors.forename: Stephan Herwig
authors.initials: SH
authors.lastname: Koter
authors.affiliation: Division for Phoniatrics, Department of Otorhinolaryngology, Medical University of Graz, Graz, Austria.
authors.forename: Georg Philipp
authors.initials: GP
authors.lastname: Hammer
authors.affiliation: Division for Phoniatrics, Department of Otorhinolaryngology, Medical University of Graz, Graz, Austria.
authors.forename: Gerhard
authors.initials: G
authors.lastname: Friedrich
authors.affiliation: Division for Vascular Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
authors.forename: Tina Ulrike
authors.initials: TU
authors.lastname: Cohnert