@article{wang_pu_song_xu_meng_yang_xu_wang_sun_liu_et al._2026,  title={External validation of a nomogram for predicting tubulointerstitial lesions in IgA nephropathy: a cross-regional study in China},  volume={81},  ISSN={1807-5932},  url={https://doi.org/10.1016/j.clinsp.2026.100860},  DOI={10.1016/j.clinsp.2026.100860},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Wang, Xinyu and Pu, Litian and Song, Lu and Xu, Jian and Meng, Hu and Yang, Meng and Xu, Yan and Wang, Qiao and Sun, Lijuan and Liu, Feifei and Yu, Yaling and Zhao, Yaxi and Shen, Ying and Deng, Qinyuan},  year={2026},  pages={100860} }