Xin, Baoquan
Huang, Xing
Wan, Wei
Lv, Kai
Hu, Yiwei
Wang, Jing
Li, Song
Zou, Weiwei
Xiao, Jianru
Liu, Tielong
Article History
Received: 14 September 2019
Accepted: 15 January 2020
First Online: 12 February 2020
Compliance with ethical standards
: The research plan was approved by the ethics committee of our hospital; this article does not contain any studies with human participants or animals performed by any of the authors. The experiment was conducted with relevant guidelines and regulations, and all the participants singed informed consent. The manuscript submitted does not contain information about medical device(s)/drugs. No funds were received in support of this work. No relevant financial activities outside the submitted work. We declare that we have no conflict of interest.