1. Department of Neurorehabilitation, Rigshospitalet, TBI Unit, Copenhagen, Denmark
2. Department of Science in Nursing Health, Aarhus University, Aarhus, Denmark
3. Duden Institut für Lerntherapie, Potsdam, Germany
4. Department of Otolaryngology at UKB, Hospital of the University of Berlin, Charite Medical School, Berlin, Germany