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Authors
Liu, Shuang
Wang, Jing
Zhang, Liang
Zhang, Xiang
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (71371091, 71273099, 71673093)
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Article History
Received: 29 June 2017
Accepted: 2 March 2018
First Online: 9 March 2018
Ethics approval and consent to participate
: The current study was approved by the Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology. Approval from the Xi County Bureau of Health was obtained to utilize anonymous data from the NCMS database. All personal identification information, such as names, medical record numbers, and identification card numbers were removed to protect patient privacy.
: 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.
