Yang, Fan
Zhao, Jing
Liu, Chunwei
Mao, Yiran
Mu, Jie
Wei, Xi
Jia, Jinyan
Zhang, Sheng
Xin, Xiaojie
Tan, Jian
Article History
Received: 12 September 2019
Accepted: 9 December 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: The research protocol was approved by the ethics committee of the hospital and was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. Signed informed consent was obtained from each patient before they participated in the study.
: Not applicable.
: The authors declare that they have no competing interests.