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Authors
Zhao, Xuemin
Bie, Mengjun https://orcid.org/0000-0002-5579-5109
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Article History
Received: 16 April 2020
Accepted: 4 August 2020
First Online: 10 August 2020
Ethics approval and consent to participate
: This study was carried out following the international ethical recommendations for medical research in humans. Both authors were sure that this study was conducted in accordance with the standards set out in the Declaration of Helsinki. Before starting the study, the Ethical Committee of the first affiliated hospital of Chongqing Medical University approved the study protocol.
: Not applicable.
: There is no conflict of interest to declare in this study.
