1. Clinical Cooperation Group Molecular Oncology, Helmholtz-Zentrum München, German Research Center for Environmental Health, and Head and Neck Research Department, Ludwig-Maximilians-University of Munich, Munich, Germany
2. Department of Otorhinolaryngology, Head and Neck Surgery, Grosshadern Medical Center, Ludwig-Maximilians-University of Munich, Munich, Germany
3. Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany