1. Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
2. Biomedical Engineering Research Center, Smart Healthcare Research Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
3. Department of Medical Device Management and Research, SAIHST (Samsung Advanced Institute for Health Sciences & Technology), Sungkyunkwan University, Seoul 06355, Republic of Korea