Tan, Haining
Shen, Jianxiong http://orcid.org/0000-0001-7172-9550
Feng, Fan
Zhang, Jianguo
Wang, Hai
Chen, Chong
Li, Zheng
Funding for this research was provided by:
National Natural Science Foundation of China (81330044, 81772424)
National Natural Science Foundation of Beijing (7151006)
Article History
Received: 10 January 2018
Revised: 27 May 2018
Accepted: 20 June 2018
First Online: 30 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.