1 Biohybrid Systems Group, Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
2 Institute of Cell and Tissue Engineering, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
3 Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
4 Institute of Cell and Tissue Engineering, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea. jgj814@catholic.ac.kr.
5 Institute of Cell and Tissue Engineering, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea. chunhj@catholic.ac.kr.