Very late relapse of AML after allogeneic hematopoietic cell transplantation is often extramedullary

J. M. Watts, X. V. Wang, R. T. Swords, E. Paietta, D. Douer, S. M. Lugar, H. F. Fernandez, J. M. Rowe, H. M. Lazarus, M. S. Tallman, M. R. Litzow