1. Chirurgie Robotique; Hôpital Américain de Paris; Neuilly sur Seine France
2. Department of Endocrine Surgery; Yonsei University; Seoul South Korea
3. Department of Otorhinolaryngology, Head and Neck Surgery and Oncology; Head and Neck Cancer Center of the Hubertus Wald University Cancer Center Hamburg; University Medical Center Hamburg-Eppendorf; Hamburg Germany