Liu, Jun http://orcid.org/0000-0002-9353-4604
Xia, Yu
Zhang, Hao
Li, Xiaofeng
Zhang, Shu
Fang, Pihua
Article History
Received: 15 July 2019
Revised: 6 October 2019
Accepted: 6 December 2019
First Online: 30 January 2020
Compliance with ethical guidelines
:
: J. Liu, Y. Xia, H. Zhang, X. Li, S. Zhang, and P. Fang declare that they have no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case.