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Authors
Cao, Wei-Wei
Zhou, Rong-Rong
Ou, Xinghua
Shi, Ling-Xi
Xiao, Chao-Qi
Chen, Ting-Yin
Tan, Hua
Fan, Xue-Gong
Li, Bi-Juan
Li, Ning
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Funding
Funding for this research was provided by:
Grant from research project of Health and Family Planning Commission of Hunan province (A2016015)
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Article History
Received: 12 November 2017
Accepted: 20 March 2018
First Online: 2 April 2018
Ethics approval and consent to participate
: The study protocol was approved by the “Medical Ethics Committee of the Xiangya Hospital of Centre South University”. Before enrollment, all participants received a brief explanation of the aims, risks and benefits of the study. The participants signed an informed consent form. Consent was obtained from a parent or guardian on behalf of any participants under the age of 16.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
