1. Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
2. Department of Basic Sciences and Environment, Faculty of Life Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg, Denmark
3. Department of Biology, Faculty of Science, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
4. Department of Studies in Biotechnology, University of Mysore, Mysore-Karnataka, India