Prednisone Completed Phase 2 Trials for Chronic Myeloproliferative Disorders / Neuroblastomas / Myelodysplastic Syndromes / Testicular germ cell tumour / Cancer, Breast / Cancer of the Ovary / Myelodysplastic/Myeloproliferative Diseases / Leukemias / Multiple Myeloma and Plasma Cell Neoplasm / Graft Versus Host Disease (GVHD) / Gestational Trophoblastic Disease / Malignant Lymphomas Supportive Care