1. Danish Polymer Centre, Department of Chemical and Biochemical Engineering; Technical University of Denmark; Søltofts Plads, Building 229 DK-2800 Kgs. Lyngby Denmark
2. Faculty of Pharmaceutical Sciences; University of British Columbia; 2405 Wesbrook Mall Vancouver BC V6T 1Z3 Canada
3. LGP2/Grenoble INP-Pagora/CNRS; 461 rue de la papeterie, Domaine universitaire, C10065 38402 Saint Martin d'Hères Cedex France