1 Therapeutic Immunology, F79, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, Hälsovägen, SE-14186 Stockholm, Sweden.
2 Centre for Clinical Microbiology, Division of Infection and Immunity, University College London and UCL Hospitals NHS Foundation Trust, London, UK.
3 Therapeutic Immunology, F79, Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, Hälsovägen, SE-14186 Stockholm, Sweden; Center for Allogeneic Stem Cell Transplantation, Stockholm, Sweden. Electronic address: Markus.Maeurer@ki.se.