Effect of sirolimus on connective tissue disease related refractory thrombocytopenia: clinical efficacy and immunomodulatory mechanism - Li, Xuemei; Su, Li; Sun, Xuejing; Li, Xia; Tian, Zhen; Liao, Qiuju; Sun, Wanling; Zhao, Yi (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2025)