Clinicopathological characteristics of transcription factor-defined subtypes in bladder small cell carcinoma. - Kitahama, Keiichiro; Shigematsu, Yasuyuki; Sugawara, Emiko; Amori, Mahmut; Amori, Gulanbar; Saito, Rumiko; Ohmoto, Akihiro; Yonese, Junji; Takeuchi, Kengo; Inamura, Kentaro (BMC Cancer, 2025)