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MB and KC are co-first authors.
Contributors MB, KC and OAT wrote the manuscript. SH, ER reviewed and corrected the manuscript. A-SD, MT and JH reviewed the manuscript. XM reviewed, corrected the manuscript and helped for the submission.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient and public involvement Patients and/or the public were not involved in the design, conduct, reporting or dissemination plans of this research.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; internally peer reviewed.