1. Department of Physics, Chalmers University of Technology, Gothenburg, Sweden
2. Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3. Faculty of Medicine and Life Sciences and BioMediTech, University of Tampere, Finland and Fimlab Laboratories, Tampere, Finland
4. Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk, Russia