1. Department of Diagnostic Pathology; Nara Medical University; Kashihara Nara Japan
2. Department of Pathology and Oncology; University of Occupational and Environmental Health; Kitakyushu Fukuoka Japan
3. Surgical Pathology; Nara Medical University Hospital; Kashihara Nara Japan
4. Department of Otolaryngology-Head and Neck Surgery; Nara Medical University; Kashihara Nara Japan