1. Department of ENT, Head and Neck Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
2. Department of Maxillofacial Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
3. Department of Plastic and Reconstructive Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
4. School of Chemical and Biochemical Engineering, Nanyang University of Technology, Singapore