Real-World Efficacy of Intravesical Gemcitabine for BCG-Unresponsive Non–muscle-Invasive Bladder Cancer. - Lee, Hye Won; Jung, Eui Hyun; Kim, Kyung Hwan; Ha, Hong Koo; Oh, Jong Jin; Kang, Seok Ho; Jeong, Seung-hwan; Yuk, Hyeong Dong; Heo, Ji Eun; Ham, Won Sik; Hwang, Eu Chang; Jung, Seung Il; et al. (Cancer Research & Treatment, 2026)