transplantation stem allogeneic cell hematopoietic prior undergone autologous patients history transplantation stem autologous cell hematopoietic patients eligible prior high chemotherapy sct autologous allogeneic stem cell prior transplant transplantation auto days transplantation allogeneic prior autologous organ hematopoietic liver patients cell history hematopoietic stem allogeneic transplant cell hsct transplantation prior previous autologous hct allogeneic autologous prior patients days post disease relapse cell marrow transplantation bone stem cell prior allogeneic hematopoietic reserves extensive transplantation organ history allogenic stem prior including cell major liver