1. Bioscience and Materials, RISE Research Institutes of Sweden, Box 5607, SE-114 86 Stockholm, Sweden
2. Centre for Neutron Scattering, Uppsala University, Box 516, SE-75120 Uppsala, Sweden
3. Biolin Scientific AB, SE-42677 Västra Frölunda, Sweden
4. Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden