Gut microbiome is associated with radiotherapy response in lung cancer patients with brain metastases - Liang, Fei; Sun, Yichu; Yang, Jing; Shen, Ziqiang; Wang, Guangfeng; Zhu, Jiangrui; Zhou, Chong; Xia, Youyou (Frontiers in Cellular and Infection Microbiology, 2025)