Affiliation: | 1. Laboratory of Lipid Research, Department of Biochemistry and Third Department of Medicine, University of Helsinki, Siltavuorenpenger 10a, 00170 Helsinki 17, Finland;2. Institute of Biochemistry, Technical University of Graz, Graz, Austria;3. Department of Medical Chemistry, University of Helsinki, Siltavuorenpenger 10a, 00170 Helsinki 17, Finland |