Funding for this research was provided by:
KWF Kankerbestrijding (KWF VU 2013-6015)
Stichting VUmc-CCA (CCA2015-3-06)
Received: 20 November 2018
Accepted: 31 January 2019
First Online: 12 February 2019
Ethics approval and consent to participate
: All patients participating in this study gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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