1. Department of Otolaryngology–Head & Neck Surgery, Tübingen Hearing Research Centre Eberhard Karls University Tübingen Tübingen Germany
2. Department of Medical Genetics Saint Petersburg State Pediatric Medical University Saint Petersburg Russia
3. Department of Tumor Growth Biology N. N. Petrov Institute of Oncology Saint Petersburg Russia
4. CeGaT GmbH and Praxis für Humangenetik Tübingen Tübingen Germany
5. Department of Oncology I. I. Mechnikov North‐Western Medical University Saint Petersburg Russia