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Contributors AA cared for the patient, drafted the initial draft and reviewed the final manuscript. YO critically reviewed the manuscript for important intellectual content. HS and SY provided conceptual advices. All the authors critically reviewed the manuscript, and read and approved the final manuscript.
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.
Provenance and peer review Not commissioned; internally peer reviewed.
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