1. Institute of Cellular and Molecular Immunology, Georg-August-University Göttingen; Göttingen Germany
2. Bioanalytical Mass Spectrometry Group, Max Planck Institute for Biophysical Chemistry; Göttingen Germany
3. Lymphocyte Interaction Laboratory, Cancer Research UK, London Research Institute; London UK
4. Bioanalytics, Department of Clinical Chemistry, University Medical Center, Georg-August-University Göttingen; Göttingen Germany