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Article History

Received: 6 October 2025

Accepted: 7 April 2026

First Online: 20 April 2026

Declarations

:

: The protocol received approval from the Ethical Review Committee of Peking University (approval numbers: IRB00001052-11015 for the main household survey and IRB00001052-11014 for biomarker collection). The study was conducted in compliance with the Declaration of Helsinki principles. All participants signed the informed consent and repository consent that permitted their data to be shared after a detailed presentation of the risks and benefits related to study participation.

: Not Applicable.

: The authors declare no competing interests.