Funding for this research was provided by:
KWF Kankerbestrijding (2014-6696, 2016-10726)
Received: 11 October 2018
Accepted: 1 January 2019
First Online: 18 January 2019
Ethics approval and consent to participate
: Approved under Institutional Review Board protocol P07–112 and P08–197. These studies were conducted in accordance with the Declaration of Helsinki and approved by the local medical ethical committee of the Leiden University Medical Center (LUMC) and in agreement with the Dutch law.
: Not applicable.
: The authors declare that they have no competing interests.
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