Affiliation: | 1. Department of Chemistry, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland 2. Department of Biochemistry, University of Oulu, Oulu, Finland 3. Department of Biological and Environmental Sciences, University of Jyv?skyl?, Jyvaskyla, Finland 4. Institute of Biotechnology, National Biological NMR centre, University of Helsinki, Helsinki, Finland
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