Received: 7 December 2020
Accepted: 11 February 2021
First Online: 19 February 2021
Ethics approval and consent to participate
: The institutional ethics committee granted an exemption from requiring ethics approval in this study (NL65414.018.18; Academic Medical Center, University of Amsterdam, Amsterdam, NL).
: Figures depicting individual person’s data are unidentifiable and there are no details on individuals reported within the manuscript. Therefore, separate consent for publication is not deemed necessary for the figures shown in this manuscript.
: The authors declare that they have no competing interests. Dr. van Kesteren has research agreements with Varian and Philips Healthcare. Both industries were not a member of the research team and did not influence this study in any way.