Report from the International Bone Marrow Transplant Registry (IBMTR), 1983.

Exponential growth in the field of bone marrow transplantation is now enabling the IBMTR to conduct sophisticated statistical analyses with group sizes sufficient to identify factors that significantly influence outcome. The members of the Advisory Committee encourage bone marrow transplant teams throughout the world to report their consecutive transplant cases to the IBMTR. Participation in this unique international cooperative research group with the variability in protocols from center to center enables studies to be performed that could not be undertaken by any individual center.