David Jacobsohn, M.D., ScM, Division Chief of Blood and Marrow Transplantation, joined Children's National Hospital from Children’s Memorial Hospital in Chicago, where he served as a member of the Stem Cell Transplant Program staff and as the Director of the Chronic Graft-versus-Host Disease Clinic. He has lectured widely on GvHD/BMT in Europe, Latin America, and the United States. Dr. Jacobsohn obtained a Bachelor of Science from Yale University, his medical degree from Tufts University, and a Masters in Clinical Investigation from Johns Hopkins School of Hygiene and Public Health.