title: Erratum to: Patient survey on Invisalign®treatment comparing the SmartTrack®material to the previously used aligner material.
authors.affiliation: Department of Anesthesiology and Intensive Care Medicine, Pain Management Center, Medical School Mannheim at University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany.|Department of Clinical Psychology, Psychotherapy and Experimental Psychopathology, Johannes Gutenberg University Mainz, Mainz, Germany.
authors.forename: Anne-Kathrin
authors.initials: AK
authors.lastname: Bräscher
authors.affiliation: , Währinger Strasse 44, Vienna, Austria.
authors.forename: Dietmar
authors.initials: D
authors.lastname: Zuran
authors.affiliation: Department of Anesthesiology and Intensive Care Medicine, Pain Management Center, Medical School Mannheim at University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany.
authors.forename: Robert E
authors.initials: RE
authors.lastname: Feldmann
authors.affiliation: Department of Anesthesiology and Intensive Care Medicine, Pain Management Center, Medical School Mannheim at University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany. justus.benrath@umm.de.
authors.forename: Justus
authors.initials: J
authors.lastname: Benrath