Children's oncologists participate in the Pediatric Blood and Marrow Transplant Consortium (PBMTC) that is made up of clinicians and scientists from around the world engaged in the area of Hematopoietic Stem Cell Transplantation. The purpose of the PBMTC is to engage in scientific and educational activities related to the use of hematopoietic stem cells in the treatment of diseases of children and adolescents.