1 Institute for Cancer Research, Division of Cancer Medicine, Oslo University Hospital, Oslo Norway.
2 MATRIX, Norwegian Centre for Clinical Cancer Research, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway.
3 Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway.
4 Institute for Cancer Research, Division of Cancer Medicine, Oslo University Hospital; Institute of Clinical Medicine, University of Oslo; Department of Pathology, Oslo University Hospital, Oslo, Norway.
5 Institute for Cancer Research, Division of Cancer Medicine, Oslo University Hospital; Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
6 Institute for Cancer Research, Division of Cancer Medicine, Oslo University Hospital; MATRIX, Norwegian Centre for Clinical Cancer Research; Division of Cancer Medicine, Oslo University Hospital; Institute of Clinical Medicine, University of Oslo, Oslo, Norway. aslaug.helland@medisin.uio.no.