1. Department of Life Sciences; University of Trieste; Via L. Giorgieri 5 I-34127 Trieste Italy
2. Department of Micro- and Nanotechnology; Technical University of Denmark; Building 345C 2800 Kgs. Lyngby Denmark
3. Norwegian Biopolymer Laboratory (NOBIPOL); Department of Biotechnology; Norwegian University of Science and Technology (NTNU); NO-7491 Trondheim Norway
4. Department of Medical; Surgical and Health Sciences; University of Trieste; Piazza dell'Ospitale 1 I-34129 Trieste Italy