Authors’ contributions
DvdH and JS contributed to the study design. AD contributed to the study design and was an investigator in the study. RDI and XB were investigators in the study. AS and PW were involved in the execution of the study. I-HS was involved in the design and execution of the study. XB and YL conducted the statistical analyses. All authors analyzed and interpreted the data and contributed to the critical revision of the manuscript. All named authors met the International Committee of Medical Journal Editors criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.