1. Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, Montebello, N-0310 Oslo, Norway and Department of Biochemistry, Institute for Cancer Research, Oslo University Hospital, Montebello, 0310 Oslo, Norway
2. Frankfurt Institute for Molecular Life Sciences and Institute of Biochemistry II, Goethe University, Theodor-Stern-Kai 7, Frankfurt am Main, 60590, Germany