Impact of immune-related adverse events on the therapeutic efficacy of pembrolizumab in urothelial carcinoma: a multicenter retrospective study using time-dependent analysis ============================================================================================================================================================================= * Taketo Kawai * Satoru Taguchi * Tohru Nakagawa * Jun Kamei * Yu Nakamura * Daisuke Obinata * Kenya Yamaguchi * Tomoyuki Kaneko * Shigenori Kakutani * Mayuko Tokunaga * Yukari Uemura * Yusuke Sato * Yutaka Enomoto * Hiroaki Nishimatsu * Tetsuya Fujimura * Hiroshi Fukuhara * Satoru Takahashi * Haruki Kume