1 Institute for Cancer Research, Oslo University Hospital, Oslo, Norway. m.m.agudo@ous-research.no.
2 Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands; Mathematical Institute, Leiden University, Leiden, The Netherlands.
3 Institute for Cancer Research, Oslo University Hospital, Oslo, Norway.
4 Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
5 Department of Oncology, Trondheim University Hospital, Trondheim, Norway.
6 Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands.