Li, Ning http://orcid.org/0000-0001-6168-9604
Lin, Bao
Wang, Hong http://orcid.org/0000-0002-5496-1275
Li, Xiaoming
Yang, Fangfang
Ding, Xinhua http://orcid.org/0000-0002-6510-5992
Yan, Jianbing http://orcid.org/0000-0001-8650-7811
Chu, Zhaohui http://orcid.org/0000-0001-8320-7872
Article History
Received: 4 November 2018
Accepted: 19 August 2019
First Online: 30 September 2019
Competing interests
: The authors declare no competing interests.