1 Department of Clinical and Molecular Medicine, NTNU, Norwegian University of Science and Technology, Trondheim, Norway; Department of Oncology, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway. Electronic address: bjorn.h.gronberg@ntnu.no.
2 Department of Oncology, Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Denmark.
3 Department of Oncology, Sahlgrenska University Hospital, Gothenburg, Sweden; Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
4 Department of Clinical and Molecular Medicine, NTNU, Norwegian University of Science and Technology, Trondheim, Norway; Department of Oncology, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.