P827: EFFICACY AND SAFETY OF ROMIPLOSTIM ADDED TO IMMUNOSUPPRESSIVE THERAPY AS A FIRST-LINE TREATMENT IN PATIENTS WITH APLASTIC ANEMIA: A PHASE 2/3 CLINICAL TRIAL. (23rd June 2022) - Yamazaki, H.; Lee, J. W.; Jang, J. H.; Sawa, M.; Kizaki, M.; Tomiyama, Y.; Nagafuji, K.; Usuki, K.; Gau, J.-P.; Morita, Y.; Tang, J.-L.; Chang, H.; et al.