Mitoxantrone Active Not Recruiting Phase 3 Trials for Untreated Childhood Myeloid Neoplasm / Acute Promyelocytic Leukemia With PML-RARA / Adult Acute Promyelocytic Leukemia With t(15;17)(q22;q12); PML-RARA / Untreated Adult Acute Myeloid Leukemia / Childhood Acute Promyelocytic Leukemia With t(15;17)(q22;q12); PML-RARA Treatment