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Correction notice This article has been corrected since it published Online First. A second corresponding author has been added.
Contributors Concept and design: M-HZ. Acquisition of data: X-BW, H-dY, Q-FS, K-HP, KIZ and Y-PC. Analysis and interpretation of data: GT and AM. Drafting of the manuscript: GT. Critical revision of the manuscript for important intellectual content: AM, CDB, ME and JG. Study supervision: M-HZ
Funding M-HZ is supported by grants from the National Natural Science Foundation of China (81500665). CDB is supported in part by the Southampton NIHR Biomedical Research Centre (IS-BRC-20004), UK. GT is supported in part by grants from the School of Medicine, University of Verona, Verona, Italy.
Competing interests None declared.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; externally peer reviewed.