Yong, Chaw-Keong http://orcid.org/0000-0002-6470-1274
Utama, M. Iqbal Bakti http://orcid.org/0000-0002-4454-8348
Ong, Chin Shen http://orcid.org/0000-0001-8747-1849
Cao, Ting http://orcid.org/0000-0003-1300-6084
Regan, Emma C.
Horng, Jason
Shen, Yuxia
Cai, Hui
Watanabe, Kenji http://orcid.org/0000-0003-3701-8119
Taniguchi, Takashi
Tongay, Sefaattin
Deng, Hui http://orcid.org/0000-0003-0629-3230
Zettl, Alex http://orcid.org/0000-0001-6330-136X
Louie, Steven G. http://orcid.org/0000-0003-0622-0170
Wang, Feng http://orcid.org/0000-0001-8369-6194
Article History
Received: 23 December 2018
Accepted: 25 June 2019
First Online: 5 August 2019
Competing interests
: The authors declare no competing interests.