Case report: Rituximab combined with plasma exchange treatment for systemic lupus erythematosus complicated with thrombotic microangiopathy and non-cirrhotic portal hypertension - Huang, Jinmei; Fan, Wei; Chen, Xuyan; Wu, Shufan; Dong, Zhigao; Zhang, Yi; Lin, Yiwan; Xiao, Pingping (Frontiers in Immunology, 2025)