Xie, Sheling
Yan, Peng
Yao, Chen
Yan, Xiaoyan
Huo, Yuliang
Zhang, Junhua
Liu, Si
Feng, Zhiqiao
Shang, Hongcai
Xie, Lixin
Funding for this research was provided by:
Development Center for Medical Science and Technology of the National Health and Family Planning Commission of the People’s Republic of China (WK-2016-HR-02)
Article History
Received: 19 March 2018
Accepted: 17 January 2019
First Online: 18 February 2019
Ethics approval and consent to participate
: This trial complies with the principles of Declaration of Helsinki and the regulations of quality management of clinical trials in China. The trial protocol has been approved by the Ethics Committee of each sub-center (Table InternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.
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