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Authors
Liao, Qiuju
Xiu, Shuangling
Chan, Piu
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Article History
Received: 27 March 2019
Accepted: 19 June 2019
First Online: 31 July 2019
Compliance with ethical standards
:
: No potential conflict of interest was disclosed.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of Xuanwu Hospital, Capital Medical University. In addition, this study was performed in accordance with the ethical principles of the Declaration of Helsinki.
: Written informed consent was obtained from all participants.
