Kim, Kihyun http://orcid.org/0000-0001-7578-7977
Yoon, Sol http://orcid.org/0000-0003-3529-9631
Seo, Myunghae http://orcid.org/0000-0002-4784-9656
Lee, Seungho http://orcid.org/0000-0001-5699-5260
Cho, Hyeonsu http://orcid.org/0000-0002-8779-5816
Meyyappan, M. http://orcid.org/0000-0001-9202-412X
Baek, Chang-Ki http://orcid.org/0000-0002-2852-6683
Article History
Received: 3 December 2018
Accepted: 19 September 2019
First Online: 4 November 2019
Competing interests
: The authors declare no competing interests.