Immune-related adverse events and prognosis in patients with upper gastrointestinal cancer treated with nivolumab

Yoshihiro Hara, Yoshifumi Baba, Tasuku Toihata, Kazuto Harada, Katsuhiro Ogawa, Masaaki Iwatsuki, Shiro Iwagami, Yuji Miyamoto, Naoya Yoshida, Hideo Baba