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Authors
Tran, Ngoc Phu
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Article History
Received: 22 May 2026
Accepted: 6 September 2026
First Online: 19 September 2026
Declarations
Ethics approval and consent to participate: Not applicable. The study uses publicly available country-level secondary data and does not involve human participants, animals, or identifiable personal information.
Consent for publication: Not applicable. This manuscript does not contain any identifiable personal data.
Competing interests: The authors declare no competing interests.
