1. Department
of Fibre and Polymer
Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
2. School of Biotechnology, Royal
Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
3. Wallenberg
Wood Science Center, Royal Institute of Technology, SE-100 44 Stockholm,
Sweden
4. Department of Applied Physics, Aalto University/Helsinki University of Technology, FIN-00076
Helsinki, Finland