1. Department of Otorhinolaryngology Head and Neck Surgery, Klinikum Bielefeld, Bielefeld, Germany
2. Radiologie und Neuroradiologie am Glattzentrum, Wallisellen, Switzerland
3. Department of Radiology, GZA Hospitals Antwerp, Belgium
4. Department of Otolaryngology and Head and Neck Surgery, Kansai Rosai Hospital, Amagasaki, Japan
5. Section of Otolaryngology- Head & Neck Surgery, The University of Chicago Medicine & Biological Sciences, Chicago, USA
6. Canterbury District Health Board, Department of Otolaryngology, Christchurch, New Zealand
7. Department of Otolaryngology, Clinica Universitaria de Navarra, Spain
8. Tempere University, Finland
9. Department of Otolaryngology, Nagoya University, Japan
10. Department of Otorhinolaryngology, Shinshu University School of Medicine, China
11. Eye Ear Nose and Throat Hospital of Fudan University, China
12. Department of Otolaryngology, Changhai Hospital Second Military Medical University, Shanghai, China
13. Department of Radiology, Nagoya University, Japan