Text and Data Mining valid from 2018-09-04
Received: 22 May 2018
Accepted: 29 August 2018
First Online: 4 September 2018
Ethics approval and consent to participate
: This retrospective cohort study was performed at two centers in human subjects and was reviewed and approved by the Institutional Review Board at University Hospitals Leuven and Yokohama City University Medical Center. Informed consent for this study was waived because no individual patients were identified.
: Not applicable.
: The authors declare that they have no competing interests.
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