1. a HA LAB. Gasan R&D Campus, LG Electronics , 327-23, Gasan-dong, Geumcheon-gu, Seoul , 153-082 , Republic of Korea
2. b Daegu Research Center for Medical Devices and Green Energy, KIMM , 711 Hosan-dong, Dalseo-gu, Daegu , 704-948 , Republic of Korea
3. c Department of Human Perception, Cognition and Action , MPI Spemannstrasse 38, Tuebingen , 72076 , Germany
4. d Center for Modeling, Simulation and Imaging in Medicine, Jonsson Engineering Center 3205, RPI , Troy , New York , 12180-3590 , USA
5. e Department of Mechanical Engineering , KAIST , 291 Daehak-ro Yuseong-gu, Daejeon , 305-701 , Republic of Korea
6. f Department of Internal Medicine , Ewha Womans University , 911-1 Mokdong Yangcheon-gu, Seoul , 158-710 , Republic of Korea