School of Electronics and Information Engineering, CheongJu University, CheongJu, Korea

School of Biomedical Engineering, KonKuk University, ChungJu, Korea

School of Biomedical Engineering, KonKuk University, ChungJu, Korea

School of Biomedical Engineering, KonKuk University, ChungJu, Korea

Department of Nursing, KonKuk University, ChungJu, Korea

School of Electronics and Information Engineering, CheongJu University, CheongJu, Korea