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Authors
Cai, Li
Dai, Meixia
Lin, Lizi
Yang, Wenhan
Chen, Yajun
Ma, Jun
Jing, Jin
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Funding
Funding for this research was provided by:
the Research Special Fund for Public Welfare of Health from the Ministry of Health, the People's Republic of China (201202010)
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Article History
Received: 13 June 2018
Accepted: 16 October 2018
First Online: 3 November 2018
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of the Peking University. Informed consent was obtained from all individual participants included in the present study.
: 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.
