1. Institute of Polymer Research, GKSS Research Center Geesthacht, Teltow, Germany.
2. Klinik und Poliklinik für Innere Medizin B, Universitätsklinikum der Ernst-Moritz-Arndt-Universität, Greifswald, Germany.
3. Biomedical Materials Group, Department of Pharmaceutics and Biopharmaceutics, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.