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Contributors ARA drafted and edited the manuscript. KB had helped in editing the video images. SB helped in managing patient and editing the manuscript. SM was involved in clinical management of the patient and critical review of the 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.
Patient consent for publication Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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