1. Facial Nerve Center, Department of Otolaryngology- Head and Neck Surgery, Oregon Health & Science University, Oregon, USA
2. Department of Neurology, Oregon Health & Science University, MS Center of Excellence-West, VA Portland Health Care System, Portland, OR, USA
3. Facial-Nerve-Center, Department of Otorhinolaryngology, Head and Neck Surgery, Center of Rare Diseases, Jena University Hospital, Jena, Germany