1. Department of Otorhinolaryngology, Jena University Hospital, Friedrich Schiller University, D‑07747 Jena, Germany
2. Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, D‑07747 Jena, Germany
3. Cytogenetics and Genomics Laboratory, Faculty of Medicine, University of Coimbra, Polo Ci�ncias da Sa�de, Coimbra 3000‑354, Portugal