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Authors
Zeng, Huiqian
Guo, Fang
Lin, Baohua
Liu, Lei
Wei, Wei
He, Ping
Lai, Yumian
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Article History
Received: 31 October 2019
Accepted: 12 March 2020
First Online: 26 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest in this work.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research ethics committee of Guangzhou Women and Children’s Medical Centre and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in this study.
