1. Daegu-Gyeongbuk Research Center, Medical IT Convergence Research Section, ETRI; 488-23, YongBong-Ri Yuga-Myeon Dalseong-Gun 711-880 Korea
2. Department of Electrical Engineering; Korea Advanced Institute of Science and Technology (KAIST); 373-1 Guseong-Dong Yuseong-Gu Daejeon 305-701 Korea
3. Department of Electronic Engineering/Engineering Research Institute (ERI), Gyeongsang National University; 501 Jinju-Daero Jinju Gyeongnam 660-701 Korea