1 Institute of Clinical Immunology, Department of Diagnostics, Medical Faculty, University of Leipzig, Germany; Translational Centre for Regenerative Medicine (TRM), University of Leipzig, Germany. Electronic address: sack@uni-leipzig.de.
2 Institute of Clinical Immunology, Department of Diagnostics, Medical Faculty, University of Leipzig, Germany; Translational Centre for Regenerative Medicine (TRM), University of Leipzig, Germany.
3 Immuno Deficiency Center Leipzig (IDCL), Municipal Hospital St. Georg Leipzig, Germany.
4 Translational Centre for Regenerative Medicine (TRM), University of Leipzig, Germany; Division of Clinical Immunology and Transfusion Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden.