Mycophenolate mofetil Recruiting Phase 2 Trials for Adult Acute Lymphoblastic Leukemia in Complete Remission / Chronic Myelogenous Leukemia, BCR-ABL1 Positive in Remission / Myelodysplastic Syndrome / Severe Aplastic Anemia (SAA) / Non-Hodgkin's Lymphoma (NHL) / Waldenström's Macroglobulinemia (WM) / Lymphoma, Hodgkins / Plasma Cell Myeloma / Graft Versus Host Disease (GVHD) / Acute myeloid leukaemia (in remission) / Myeloproliferative Neoplasms / Chronic Myelomonocytic Leukemia in Remission / Minimal Residual Disease Prevention