Association of oncological response between the first‐line chemotherapy and subsequent immune checkpoint inhibitors therapy in patients with unresectable or metastatic urothelial carcinoma. (29th December 2021) - Ozaki, Kai; Hatakeyama, Shingo; Hamaya, Tomoko; Okita, Kazutaka; Hashimoto, Yasuhiro; Ohyama, Chikara