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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (61475116)
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Article History
Received: 2 August 2017
Accepted: 4 May 2018
First Online: 22 May 2018
Ethics approval and consent to participate
: The dataset used for this project was provided by Tianjin Medical University General Hospital and Tianjin Nankai Hospital. And the study was approved by the Ethical Committee of Tianjin Medical University General Hospital and was conducted under the Declaration of Helsinki.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
