1. Department of Radiology, Ehime University Graduate School of Medicine, Toon, Japan
2. Department of Pulmonary Surgery, Ehime University Graduate School of Medicine, Toon, Japan
3. Department of Diagnostic Radiology, Shikoku Cancer Center, Matsuyama, Japan
4. Department of Pathology, Shikoku Cancer Center, Matsuyama, Japan
5. Department of Head and Neck Surgery, Shikoku Cancer Center, Matsuyama, Japan
6. Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan