Safety and efficacy of the intra-bone marrow cord blood transplantation

INTERVENTION: Intra‐bone marrow injection of cord blood cells CONDITION: hematological diseases PRIMARY OUTCOME: Adverse effects related intra‐bone injection of cord‐blood cells, engraftment rate of netrophil and platelet SECONDARY OUTCOME: Regimen‐related toxicity, disease‐free survival, over‐all survival, non‐relapse mortality, relapse rate, incidence of infection, rate and severity of acute GVHD, number of neutrophil and platelet on day 50 and day 100 INCLUSION CRITERIA: Patients receiving cord‐blood transplantation