Netherlands Cancer Institute, Amsterdam, Netherlands.
Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.
Netherlands Cancer Institute, Amsterdam, Netherlands; Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands.
Central Institute of Mental Health, Mannheim, Germany; University Of Heidelberg, Heidelberg, Germany; University of Antwerp, Antwerpen, Belgium.
University of Alberta, Edmonton, Canada.
Loughborough University, Loughborough, United Kingdom.
Edith Cowan University, Perth, Australia.
King's College London, London, United Kingdom.
University of Groningen, Groningen, Netherlands; University Medical Center Groningen, Groningen, Netherlands.
George Washington University, Washington, D.C., United States.
Netherlands Cancer Institute, Amsterdam, Netherlands; University of Twente, Enschede, Netherlands.
Queensland University of Technology, Brisbane, Australia.
Fundación Giafys Cancer, Miranda de Ebro, Spain.
University Medical Center Utrecht, Utrecht, Netherlands.
Yale University, New Haven, United States.
The University of Newcastle, Newcastle, New South Wales, Australia.
Radboud University Medical Center, Nijmegen, Netherlands.
Amsterdam University Medical Center, Amsterdam, Netherlands.
University of Amsterdam, Amsterdam, Netherlands.
European University of Madrid, Madrid, Spain.
University Medical Center Utrecht, Utrecht, Netherlands.
University of Glasgow, Glasgow, United Kingdom.
Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands; University Of Queensland, Brisbane, Australia; University of Cape Town, Cape Town, South Africa; University College Dublin, Dublin, Ireland.
University of Edinburgh, Edinburgh, United Kingdom.
Edith Cowan University, Perth, Australia.
University of Amsterdam, Amsterdam, Netherlands; Amsterdam Movement Sciences, Amsterdam, Netherlands.
Netherlands Cancer Institute, Amsterdam, Netherlands; Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands.
The University of Newcastle, Newcastle, New South Wales, Australia.
German Cancer Research Center, Heidelberg, Germany.
University of Pittsburgh, Pittsburgh, United States.
University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany.
University of Melbourne, Melbourne, Australia.
Antoni van Leeuwenhoek Hospital, Amsterdam, Netherlands.
German Cancer Research Center, Heidelberg, Germany.
Netherlands Cancer Institute, Amsterdam, Netherlands.
Edith Cowan University, Perth, Australia.
Oslo University Hospital, Oslo, Norway; Oslo University Hospital, Oslo, Norway.
Netherlands Comprehensive Cancer Organisation (IKNL), Utrecht, Netherlands.
Johns Hopkins University School of Medicine, Baltimore, United States.
Oregon Health and Science University, Portland, United States.
German Cancer Research Center, Heidelberg, Germany.
University of Agder, Kristiansand, Norway.
Radboud University Medical Center, Nijmegen, Netherlands.
The present study was part of a PhD project funded by the South‐Eastern Norway Regional Health Authority. The POLARIS study is supported by the Bas Mulder Award, granted to L. M. Buffart by the Alpe d’HuZes foundation/Dutch Cancer Society (VU2011–5045).