[1
]Department of Radiation Oncology, Osaka University Graduate School of Medicine, Osaka
565-0871, Japan
[2
]Department of Medical Data Science, Osaka University Graduate School of Medicine,
Osaka 565-0871, Japan
[3
]Department of Cancer Frontier Science, Osaka University Graduate School of Medicine,
Osaka 565-0871, Japan
[4
]Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine,
Osaka 565-0871, Japan