Ding, Chengyi
Yang, Zhirong
Wang, Shengfeng
Sun, Feng http://orcid.org/0000-0003-4334-6805
Zhan, Siyan
Funding for this research was provided by:
National Natural Science Foundation of China (71673003)
Interdisciplinary Fund from Peking University (BMU20160581)
Article History
Received: 3 December 2017
Accepted: 29 January 2018
First Online: 28 February 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.