1. Office of Therapeutic Product Center for Biologics Evaluation and Research U.S. Food and Drug Administration 10903 New Hampshire Avenue Silver Spring MD 20993 USA
2. Department of Mechanical Engineering Seoul National University 1 Gwanak‐ro Gwanak‐gu Seoul 08826 Republic of Korea
3. Qureator, Inc. 7094 Miratech Drive, Suite 110 San Diego CA 92121 USA
4. Institute of Advanced Machines and Design Seoul National University 1 Gwanak‐ro Gwanak‐gu Seoul 08826 Republic of Korea