1. DWI−Leibniz Institute for Interactive Materials and Institute
of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstrasse 50, 52074 Aachen, Germany
2. Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 16206 Prague, Czech Republic
3. Department of Anesthesiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany