The authors wish to acknowledge the laboratory technicians of Ghent University Hospital and Gonda Van Melkebeke for their technical assistance in obtaining these data.
Research funding: None declared.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: Authors state no conflict of interest.
Informed consent: Informed consent was obtained from all individuals included in this study.
Ethical approval: The local Institutional Review Board approved the study.
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