1. Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
2. Department of Frontier Science for Cancer and Chemotherapy, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
3. Department of Radiation Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
4. Department of Medical Data Science, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan