Received: 14 December 2017
Accepted: 1 February 2018
First Online: 27 April 2018
Ethics approval and consent to participate
: Written informed consent was waived by the local ethical committee (medical ethical committee Academisch ziekenhuis Maastricht/Universiteit Maastricht). Institutional Review Board approval was obtained.
: Not applicable.
: The authors of this manuscript declare relationships with the following companies: Siemens, Bayer, Philips, AGFA, Cook, General Electric, Bracco.
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