Yang, Feihong
Guo, Haihong
Li, Jiao
Article History
First Online: 5 December 2019
Ethics approval and consent to participate
: Our work was approved by the ethics committee of the institute of medical information, Chinese academy of medical sciences. Before the experiment, all participants had a detailed understanding of the experiment and signed an informed consent.
: Not applicable.
: The authors declare that they have no competing interests.