Cheng, Yingying https://orcid.org/0000-0002-7698-8233
Yam, Joey Kuok Hoong
Cai, Zhao
Ding, Yichen
Zhang, Lian-Hui
Deng, Yinyue https://orcid.org/0000-0003-1511-0870
Yang, Liang https://orcid.org/0000-0002-2362-0128
Funding for this research was provided by:
National Research Foundation Singapore
Ministry of Education - Singapore (MOE2016-T2-1-010)
Article History
Received: 15 July 2018
Accepted: 13 December 2018
First Online: 14 January 2019
Competing interests
: The authors declare no competing interests.