1Yeungnam Eye Center, Yeungnam University Hospital, Daegu, Korea
2Department of Ophthalmology, Yeungnam University College of Medicine, Daegu, Korea
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Conflicts of interest
No potential conflict of interest relevant to this article was reported.
Author contributions
Conceptualization, Formal analysis, Project administration, Supervision: JHS; Data curation: HUC; Writing-original draft: HUC; Writing-review & editing: JHS.