1. Department of Pathology and Molecular Medicine, Biomedical Research Center, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
2. Department of Gastrointestinal Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
3. Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
4. Department of Social Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan