| FA | folic acid |
| HSCT | hematopoietic stem cell transplantation |
| TBI | total-body irradiation |
| GIS | gastrointestinal tract |
| GVHD | graft-versus-host disease |
| EBMT | European Bone Marrow Transplantation |
| ATG | anti-thymocyte globulin |
| IQR | interquartile range |
| n | numbers |
| MMF | mycophenolate mofetil |
| AZA | azathioprine |