Letter: Questions concerning poliovirus infections in immune-deficient children.
D001854:Bone Marrow Cells; D016026:Bone Marrow Transplantation; D002648:Child; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications / Q000276:immunology*; D011051:Poliomyelitis / Q000150:complications / Q000276:immunology*; D014184:Transplantation, Homologous