Text and Data Mining valid from 2019-08-27
Received: 10 May 2019
Accepted: 10 August 2019
First Online: 27 August 2019
Compliance with Ethical Standards
: Ruizhi Jiajue, Xuan Qi, Yan Jiang, Qiuping Wang, Wenbo Wang, Yu Pei, Xiran Wang, Wei Huang, Xin Zheng, Zhiwei Ning, Ou Wang, Mei Li, Xiaoping Xing, Wei Yu, Ling Xu, and Weibo Xia declare that they don’t have any conflicts of interest in this work.
: All of the subjects agreed to participate in this study and signed informed consent forms.