1. Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 561–756, Republic of Korea
2. Department of Physiology, Jeonbuk National University Medical School, Jeonju-si 54907, Republic of Korea
3. BK21FOUR 21st Century Medical Science Creative Human Resource Development Center, Republic of Korea
4. Mechanical Design Engineering, Jeonbuk National University, Jeonju 561–756, Republic of Korea