1. Department of Medical Genetics Faculty of Medicine University of Tsukuba Ibaraki Japan
2. Division of Otorhinolaryngology and Head & Neck Surgery Department of Sensory and Locomotor Medicine Faculty of Medical Science University of Fukui Fukui Japan
3. Yuta Clinic Mie Japan
4. Department of Otorhinolaryngology and Head & Neck Surgery Shiga University of Medical Science Shiga Japan