Successful treatment with refractory myasthenia gravis that developed after allogeneic hematopoietic stem cell transplantation: two case reports - Zhang, Huili; Wen, Yi; Ou, Yaotong; Chen, Xi; Peng, Yu; Lai, Mingjun; Mo, Wenjian; Wang, Honghao (Frontiers in Immunology, 2025)