1. Center of Excellence for Polysaccharide Research; Thuringian Institute of Textile and Plastics Research e.V.; Breitscheidstraße 97 07407 Rudolstadt Germany
2. Department of Dermatology; University Medical Center Jena; Erfurter Str. 35 07743 Jena Germany
3. Center of Excellence for Polysaccharide Research; Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University of Jena; Humboldtstraße 10 07743 Jena Germany