1. Department of Pathology, Saitama Medical University International Medical Center, Hidaka, Japan
2. Department of Gastroenterology, Saitama Medical University International Medical Center, Hidaka, Japan
3. Department of Skin Oncology/Dermatology, Saitama Medical University International Medical Center, Hidaka, Japan
4. Department of Pathology, University of Yamanashi, Yamanashi, Japan
5. Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan
6. Department of Respiratory Medicine, Saitama Medical University International Medical Center, Hidaka, Japan