1 Division of Transplantation Surgery, Department of Clinical, Science, Intervention and Technology (CLINTEC), Karolinska Institute, Stockholm, Sweden.
2 Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden.
3 Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden. Electronic address: david.berglund@igp.uu.se.