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Contributors YFR conceptualized and designed the study, drafted the initial manuscript, and reviewed and revised the manuscript. WS participated in literature retrieval, collected the data, carried out the initial analyses, and reviewed and revised the manuscript. CGN and XZZ conceptualized and designed the study, coordinated and supervised data collection, and critically reviewed the manuscript for important intellectual content. All authors approved the final manuscript as submitted and agree to be accountable for all aspects of the work.
Competing interests None declared.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; internally peer reviewed.