Pang, Long-Gang http://orcid.org/0000-0002-1279-7008
Zhou, Kai http://orcid.org/0000-0001-9859-1758
Su, Nan
Petersen, Hannah http://orcid.org/0000-0002-6213-3613
Stöcker, Horst
Wang, Xin-Nian http://orcid.org/0000-0002-9734-9967
Article History
Received: 20 March 2017
Accepted: 20 December 2017
First Online: 15 January 2018
Competing interests
: The authors declare no competing financial interests.