TY - GEN AU - Thomas,E D AU - Fefer,A TI - Graft-versus-host disease SN - 0028-4793 PY - 1979///0927 KW - Bone Marrow Transplantation KW - Female KW - Graft vs Host Disease KW - etiology KW - Humans KW - Pregnancy KW - Transplantation, Isogeneic KW - Twins KW - Twins, Monozygotic N1 - Publication Type: Letter UR - https://doi.org/10.1056/NEJM197909063011017 ER -