1. Department of Pathological DiagnosticsYamagata University Faculty of Medicine Yamagata Japan
2. Department of PathologyHarbin Medical University Cancer Hospital Harbin China
3. Department of Neurology, Hematology, Metabolism, Endocrinology and DiabetologyYamagata University Faculty of Medicine Yamagata Japan
4. Department of SurgeryYonezawa City Hospital Yonezawa Japan
5. Department of Gastroenterological, General, Breast and Thyroid SurgeryYamagata University Faculty of Medicine Yamagata Japan