Oh, Se-Kyung
Baek, Jeong-In
Weigand, Karl M
Venselaar, Hanka
Swarts, Herman G P
Park, Seong-Hyun
Hashim Raza, Muhammad
Jung, Da Jung
Choi, Soo-Young
Lee, Sang-Heun
Friedrich, Thomas
Vriend, Gert
Koenderink, Jan B
Kim, Un-Kyung
Lee, Kyu-Yup
Article History
Received: 27 October 2013
Revised: 25 June 2014
Accepted: 2 July 2014
First Online: 20 August 2014
Competing interests
: The authors declare no conflict of interest.