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Authors
Wu, Huan
Liu, Yaqing https://orcid.org/0000-0002-3094-4876
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Funding
Funding for this research was provided by:
This study was funded by Soft Science Research Program of Henan Province (192400410055)
Independent Innovation Fund of Huazhong University of Science and Technology (516-5003516027)
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Article History
Received: 19 March 2020
Accepted: 5 August 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: This study is a retrospective based on HRRHS (2015), and the Ethics Committee of Xinxiang Medical University ruled that formal consent was not necessary for this study. The data described in this study have been approved by China urban and rural health survey and research center of Xinxiang Medical university.
: Not applicable.
: The authors declare that they have no competing interests.
