Funding for this research was provided by:
National Natural Science Foundation of China (81572428)
National Natural Science Foundation of China (CN) (81770539)
Article History
Received: 4 April 2018
Accepted: 27 June 2018
First Online: 28 July 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of Tongji Medical College, Huazhong University of Science and Technology (IORG No: IORG0003571), and performed in accordance with the Declaration of Helsinki. As it was a retrospective study, all data were collected from a medical records system. Therefore, the study was exempt from the requirement to obtain individual informed consent, based on the Ethical Guidelines of the Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology.
: Not applicable.
: The authors declare that they have no competing interests.
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