1. Departments of Pediatrics and Cellular and Molecular Medicine, Pediatric Diabetes Research Center, University of California, San Diego, La Jolla, CA 92093, USA.
2. School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea.
3. KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea.
4. Next & Bio Inc., Seoul National University, Seoul 08826, Republic of Korea.
5. School of Biomedical Engineering, Korea University, Seoul 02841, Republic of Korea.