1. Department of Chemistry, University of Oslo, PO Box 1033 Blindern, N-0315 Oslo, Norway, Division of Pharmacognosy, Department of Medicinal Chemistry, Biomedical Centre, Uppsala University, PO Box 574, S-751 23, Sweden, Faculty of Health Sciences, Oslo University College, PO Box 4 St. Olavs plass, N-0130 Oslo, Norway, Department of Medical Microbiology, University Hospital of North Norway, Tromsø, Norway, and Division of Clinical Pharmacology, Department of Medicinal Sciences, Uppsala Academic Hospital, S...