Kwon, Cheong Hoon
Lee, Sung-Ho
Choi, Young-Bong
Lee, Jae Ah
Kim, Shi Hyeong
Kim, Hyug-Han
Spinks, Geoffrey M.
Wallace, Gordon G.
Lima, Márcio D.
Kozlov, Mikhail E.
Baughman, Ray H.
Kim, Seon Jeong
Article History
Received: 7 January 2014
Accepted: 21 April 2014
First Online: 2 June 2014
Competing interests
: The authors declare no competing financial interests.