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Authors
Simons, J. M.
Koppert, L. B.
Luiten, E. J. T.
van der Pol, C. C.
Samiei, S.
de Wilt, J. H. W.
Siesling, S.
Smidt, M. L.
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Article History
Received: 6 November 2019
Accepted: 6 March 2020
First Online: 16 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: We received all patient data in this study anonymously (without patient identifiers) from the Netherlands Cancer Registry (NCR). According to the Dutch law, all cancer patients are included in the NCR as maintained by the Netherlands Comprehensive Cancer Organisation (IKNL), unless the patient has objected to be registered. Therefore, informed consent was not applicable for this study.
