Received: 10 August 2018
Accepted: 20 November 2018
First Online: 6 February 2019
Ethics approval and consent to participate
: Ethical permission was obtained at the Medical Ethics Committee of the Amsterdam UMC (NL54884.018.15), and all subjects gave full written informed consent.
: All subjects gave full written informed consent.
: JS is research consultant for Robarts Clinical Trials on MRI in Crohn’s disease. The other authors have no competing interest.
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