1. Biomedical Engineering Interdisciplinary Course, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Department of Biomedical Engineering, Medical Nano Element Development Center, Samsung Biomedical Research Institute, and Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, Gangnam-Gu, Seoul, Republic of Korea 135-710