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1] Institutes of Entrepreneurial BioConvergence, Seoul National University, Seoul 151-742, Republic of Korea [2] Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Republic of Korea [3] Center for Nanoparticle Research, Institute for Basic Science, Seoul National University, Seoul 151-742, Republic of Korea [4] Seoul National University Hospital Biomedical Research Institute 101 Daehakro, Chungrogu, Seoul National University Hospital, Seoul 110-744, Republic of Korea.