City of Hope and University of Minnesota researchers initially assembled a group of ~2500 subjects who had undergone BMT between 1974 and 1998 and survived two or more years. Findings from this study helped describe the health (both physical and psychological) of individuals who had received BMT during childhood or as adults. Specifically, this study described the long-term term survival after BMT, the health of patients who had received BMT for chronic myeloid leukemia, non-Hodgkin lymphoma, acute lymphoblastic leukemia and acute myeloid leukemia. The study was also able to describe the health care utilization by long-term survivors, and their health habits. Finally, the study was able to describe the overall burden of morbidity borne by individuals receiving BMT.