Funding for this research was provided by:
Netherlands Organisation of Health Research and Development
Received: 17 November 2017
Accepted: 22 March 2018
First Online: 3 May 2018
Ethics approval and consent to participate
: The study was approved by the medical ethics committee of the Leiden University Medical Center, which is named Commissie Medische Ethiek (CME). All patients gave signed informed consent.
: All authors consented to publication of the manuscript.
: The authors declare that they have no competing interests.
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