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Authors
Chen, Shen
Zheng, Jing
Chen, Chen
Xing, Ying
Cui, Yan http://orcid.org/0000-0001-7536-6136
Ding, Yaping
Li, Xiuyun
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Funding
Funding for this research was provided by:
Jiangsu Provincial Department of Education (KYLX16_1085, 2014-98)
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Article History
Received: 5 January 2018
Accepted: 2 July 2018
First Online: 11 July 2018
Ethics approval and consent to participate
: Ethics approval of this study was obtained from the Ethics Committee of Nanjing Medical University. Approval number is No.2017–579. Written informed consents were obtained from all the community health centers and oral agreements were received from all the participants prior to study entry. The reason why written consent was not obtained is that many participants did not have enough physical ability or education level to sigh their name. This procedure was also approved by ethics committee.
: Not applicable.
: The authors declare that they have no competing interests.
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