Correction: PNI as a predictive biomarker: a novel nomogram of immunotherapy efficacy in advanced breast cancer - Li, Xinyang; Cheng, Xiang; Han, Yikai; Liu, Xiaodan; Fang, Yujin; Ren, Shengju; Dong, Xiangwen; Lei, Ziwen; Zhang, Yue; Zhang, Tengfei (Frontiers in Oncology, 2025)