Optimal time for the addition of non-corticosteroid immunosuppressants in myasthenia gravis: a single-center retrospective study in China - Ma, Jiaojiao; Chen, Dan; Yi, Fangfang; Song, Jie; Luo, Sushan; Zhong, Huahua; Xi, Jianying; Wu, Zongtai; Li, Zunbo; Zhao, Chongbo (Frontiers in Neurology, 2024)