Funding for this research was provided by:
National Natural Science Foundation of China (21575033)
Text and Data Mining valid from 2019-12-02
Received: 9 July 2019
Revised: 22 October 2019
Accepted: 31 October 2019
First Online: 2 December 2019
Compliance with Ethical Standards
: The authors declare that they have no conflicts of interest.
: All experiments were in accordance with the ethical guidelines for biomedical research involving human subjects (for Trial Implementation), Ministry of health, China, and approved by the institutional ethical committee of Hebei University.
: Informed consent was obtained for experimentation and submission from the volunteer and each of the co-authors.