Department for Molecular Biosciences, University of Oslo, P.O. Box 1041 Blindern, 0316, Oslo, Norway.|Department for Molecular Biosciences, University of Oslo, P.O. Box 1041 Blindern, 0316, Oslo, Norway.|Department for Molecular Biosciences, University of Oslo, P.O. Box 1041 Blindern, 0316, Oslo, Norway.