1. Institute for Immunology and Transfusion Medicine, University Medicine of Greifswald, 17475 Greifswald, Mecklenburg-Vorpommern, Germany
2. Chromatec, 17489 Greifswald, Mecklenburg-Vorpommern, Germany
3. Institute for Bioprocessing and Analytical Measurement Techniques, Rosenhof D, 37308 Heilbad Heiligenstadt, Thuringia, Germany